EMT Practice Test

1. Question Content...

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Question1: What percentage of the area under the standard normal curve is included within (+/-) 1.5 standard deviations from 0?

Question2: Maintainability is

Question3: Which of the following list of basic NDT techniques are X ray types?

Question4: In the failure rate model shown below, which one of the sections represents the period when catastrophic failures are likely to occur?

Question5: A single sampling plan calls for a sample size of 80 with an acceptance number of five and a rejection number of six If the quality of the submitted lots 10 percent defective. then the percent of lots expected to be accepted in the long run is approximately.

Question6: In order to implement a continuous improvement strategy, a company may institute a steering committee or improvement council. Which of the following would generally NOT be a task performed by this council?

Question7: The distribution of a characteristic is negatively skewed. The sampling distribution of the mean for large samples is:

Question8: To be effective, a corrective and preventive action system must have

Question9: A normal (Gaussian) distribution curve is

Question10: The audit team normally advises the auditee immediately upon the discovery of a finding during an audit.
Which of the following items is (are) valid reasons for taking this action?
I. If corrected immediately, the findings may be eliminated from the audit report.
II. If corrected immediately, it shows genuine auditee interest in the objectives of the audit.
III. If corrected immediately, it demonstrates the strength of an ongoing audit program.

Question11: The failure rate model above is used to show a typical relationship of many parts between their failure rate and the time in service. The reliability function for period "B" is BEST represented by

Question12: A lot is known to be 1.2% defective. Five units are randomly selected from the lot, and the lot is accepted if
1 or fewer defects are found. What is the probability of the lot being rejected?

Question13: An electronics firm was experiencing high rejections in their multiple connector manufacturing departments. "p" charts were introduced as part of a program to reduce defectives. Control limits were based on prior history, using the formula:

P' is the historical value of percent defective and n is the number of pieces inspected each week. After six weeks, the following record was accumulated

1,000 pieces were inspected each week in each department. Which department(s) exhibited a point or points out of control during this period (round off calculations to nearest tenth of a percentage point)?

Question14: When asked to make recommendations on how to correct any deficiencies noted in the exit report, the auditor(s) should

Question15: Regardless of the distribution of the individuals, the distribution of the average of n samples will follow which distribution as n becomes large?

Question16: The use of 100% inspection normally means

Question17: A purchase order for subassemblies classified as critical must include a review by
I. Quality engineering.
II. The procurement department.
III. Design engineering.

Question18: When requesting "worst case" design analysis, you expect the reliability group to

Question19: An improvement in quality costs is MOST clearly indicated when:

Question20: When used together for variables data, which of the following pair is the MOST useful in preparing control charts?

Question21: Compute the upper control limit for an s chart, based on a sample size of 10, if the process is in control with a mean of 40 and a sample standard deviation of 7.

Question22: Which of the following quality system provisions is of the greatest concern when preparing an audit checklist for a vendor qualification system audit?

Question23: The critical value of the t-distribution is

Question24: The power of efficiency in designed experiments lies in the

Question25: Which of the following statements describes discrete data?

Question26: How many outcomes are possible when performing a single trial of a binomial experiment?

Question27: Which of the following distributions models events that have 2 possibilities on each trial?

Question28: During the building phase of improvement team development, which of the following properly describes team activities?
I. The team leader is usually directive.
II. The team leader often delegates tasks.
III. Team members prioritize and perform duties.
IV. Team members are uncertain of their duties.

Question29: The primary reason that nonconforming material should be identified and segregated is

Question30: A cause and effect diagram is also called which of the following?

Question31: The AQL for a given sampling plan is 1% this means that

Question32: Reliability prediction is
I. The process of performance estimation.
II. The process of estimating the probability that a product will perform its intended function for a stated time.
III. The process of telling "how you can get there from here".

Question33: Which of the following parties, traditionally initiates an audit?

Question34: A typical use for the optical comparator would be to measure

Question35: Which table should be used to determine a confidence interval on the mean when standard deviation is NOT known and the sample size is 10?

Question36: When planning quality control functions, which one of the following is MOST directly related to production of a quality product?

Question37: The difference between setting alpha equal to 0.05 and alpha equal to 0.01 in hypothesis testing is

Question38: Select the incorrect statement from among the following. The IDs of a certain piece of tubing are normally distributed with mean 1.00". The proportion of tubing with IDs less than 0.90 is

Question39: The steeper the OC-curve, the

Question40: The basic elements of an ultrasonic test systems do NOT include which of the following?

Question41: Benchmarking might be defined as any of the following EXCEPT:

Question42: The ideal results of a quality training effort would NOT include which of the following?

Question43: Which of the following is the BEST method to developing materials for a training program on the gaps in performance?

Question44: Which of the following is a valid null hypothesis?

Question45: Which of the following quantitative methods does NOT apply to the assessment of actual system/ component reliability?

Question46: Measurement gaging is preferable to go, no-go gaging of a quality characteristic because

Question47: What distribution is used to determine the OC curve for an attributes sampling plan?

Question48: Findings and observations are audit terms. The best relationship between these terms is which of the following?

Question49: The Shewhart or Deming cycle is often referred to as

Question50: Which of the following would be considered the WEAKEST reason to initiate an audit?

Question51: The value for t, when making a two-tailed paired t test, with samples of 13 and alpha =0.05, is

Question52: Which of the following is NOT a statistical level of measurement?

Question53: A product failure in the customer's hands is bad for the company. Why do only 4% of the customers normally file a complaint?

Question54: Given the data below is normally distributed, and the population standard deviation is 3.1, what is the 90% confidence interval for the mean?
22, 23, 19, 17, 29, 25

Question55: An operation requires shipments from your vendor of small lots of fixed size. The attribute sampling plan used for receiving inspection should have its OC curve developed using

Question56: In obtaining Total Customer Satisfaction, management should NOT undertake which of the following activities?

Question57: Which of the following are the MOST logical reasons for providing source inspection?
I. The supplier has consistently shown poor out-going quality.
II. The key inspection points are hidden after assembly at the suppliers' plant.
III. The supplier requests the inspection to save them potential shipping expenses.
IV. The criticality of the product warrants it.

Question58: The following measurements for a sample with dimension X are representative of a process known to be in statistical control
42, 52, 64, 45, 53, 56, 70, 57, 49, 62
Which of the following values BEST approximates the upper and lower control limits of the process capability.

Question59: The descriptive name for a fishbone or Ishikawa diagram is which of the following?

Question60: The weight of paint cans is considered

Question61: Corrective action requests are primarily

Question62: Information that is received by upper management, is often distorted. Which of the following actions is effective in countering this problem?
I. Stop killing the messenger.
II. Establishing an open door policy.
III. Practice management by walking around.

Question63: Periodically, a sample of 20 items are randomly selected from a population that is normally distributed, the average is computed, and plotted. Which of the following statements is correct?
I. The average of the logarithms of the values is lognormally distributed.
II. The standard deviation of the averages is equal to the standard deviation of the individuals divided by the square root of 20.
III. The variance of the averages is equal to the variance of the individuals divided by the square root of 20.

Question64: The Dodge-Romig tables are designed to minimize which of the following parameters?

Question65: An X-bar and R chart was prepared for an operation using twenty samples with five pieces in each sample; X-bar was found to be 33.6 and R-bar was 6.20. During production, a sample of five was taken and the pieces measured 36, 43, 37, 25, and 38. At the time, this sample was taken:

Question66: As a commonly used problem solving technique, which of the following would be the BEST application of a Pareto chart?
I. To determine when to make proactive adjustments to a process.
II. To differentiate between major and minor problem areas.
III. To gather data and to design experimental controlled changes.
IV. To evaluate the results of other problem solving techniques upon the product or service.

Question67: Given that the population standard deviation is 6.8, what sample size is required to be 90% confident that the estimated mean has an error less than 0.02?

Question68: Which of the following statements BEST describes a bimodal distribution?

Question69: Which of the following items is the MOST important consideration when selecting an audit team member?

Question70: A company is planning to completely change its employee performance, appraisal and reward system.
Which of the following is NOT viable for consideration in the new system?

Question71: Any group, designing a quality information system (QIS) to collect product data, must consider which of the following items?
I. How the results will be used.
II. The frequency that results must be reported.
III. The allowable data error variation.

Question72: A two-way analysis of variance has r levels for one variable and c levels for the second variable with 2 observations per cell. The degree of freedom for interaction is

Question73: Consider the following statement:
"A defect which might affect the appearance or general function of essential parts" This definition describes a seriousness classification described as

Question74: For TQM success, what structure sequence should be followed?
I. Develop a quality policy.
II. Establish a quality council.
III. Establish strategic quality goals.
IV. Train for internal audits.

Question75: If a distribution is skewed to the right

Question76: The existence of a quality control manual at your key supplier means

Question77: Failure mode, effect, and criticality analysis, (FMECA) is primarily for the purpose of

Question78: A vendor may be audited both before and during the execution of a contract. During such a vendor audit, the focus may be directed at the management and resource management of the company. Which of the following areas would be EXCLUDED during such an audit?

Question79: A box contains 27 black and 3 red balls. A random sample of 5 balls is drawn without replacement. What is the probability that the sample contains one red ball?

Question80: The expression below is which of the following?

Question81: The design function which assigns probability of failures between components or subsystems is called

Question82: A comprehensive corrective action program is initiated at a large company. Input for CARs are received from customers, internal and external audits, material review reports and other sources. Which two of the following groups would usually administer and control the CAR process?
I. Management review team.
II. Quality department.
III. Corrective Action Board.
IV. Material Review Board.

Question83: Which of the following quality gurus was very critical of merit-pay and individual bonuses?
He discouraged management by objectives and the ranking of employees by performance.

Question84: The "least squares method" is used in

Question85: The example of a supplier's quality management effort to meet your existing contractual requirements is MOST like
I. A product audit.
II. A process audit.
III. A system audit.

Question86: According to Tchebysheff's theorem what % of measurements must lie within 2.5 standard deviations of the mean?

Question87: Determine the coefficient of variation for the last 500 pilot plant test runs of high temperature film having a mean of 900 Kelvin with a standard deviation of 54.

Question88: What is the lower control limit for proportion defective if the average daily production is 5000 units and the average fraction defective is 0.02?

Question89: Which of the following tools can provide a ranking of things to be done?

Question90: Which of the following are likely to be positive actions in obtaining a supplier's commitment to quality improvement?
I. Involving the supplier early in the product development stage.
II. Partially reimbursing the supplier, when the product is rejected.
III. Establishing a firm schedule of required product quantities and dates.
IV. Providing meaningful and timely quality performance feedback.

Question91: The probability of an accident for the head event "H" given below is:

Question92: In most cases, an improvement team facilitator will NOT normally:

Question93: What is the probability of an item failing in less than 5 hours if it has a constant failure rate of 1/hour?

Question94: Of the problem solving categories below, what is the usual sequence?
1. Select a problem needing improvement.
2. Collect data.
3. Implement the solution.
4. Determine if project is appropriate.
5. Study current procedures.
6. Determine candidates for data collection.
7. Analyze data.
8. Solve the problem.

Question95: An audit will be viewed as a constructive service to the function which is audited when it

Question96: If a distribution is skewed to the left, the median will always be

Question97: When using a control chart, a point plotting within the limits on the chart is

Question98: Inspection operations typically

Question99: An X-bar and R chart with n=5 has been plotted for some time and has demonstrated random variation.
Upon review of the last 30 plot points, the expected number of runs around the centerline on the X-bar chart is expected to be approximately which of the following?

Question100: Which of the following is NOT considered a prevention cost?

Question101: During the performance of an audit, which of the following are key considerations?
I. What sampling plans may be necessary?
II. Is the audit schedule progressing as planned?
III. Is there a need for a technical specialist?
IV. Is the level of compliance satisfactory?

Question102: The probability of accepting a lot of unacceptable quality is known as

Question103: The MOST essential value of a surface plate in precision measurement application is which of the following?

Question104: A bin contains 40 pills with a weight of 3.1 gm. each, 30 pills weighing 3.2 gms each and 10 pills weighing
3.3 gms each. The weight of an average pill is found from

Question105: You are requested by top management to establish an audit program of the quality systems in each branch plant of your firm. Which of the following schemes would you use in selecting the audit team to optimize continuity, direction, availability, and technology transfer?

Question106: Four ingredients are blended to make a final product. Using the data below, what is the expected weight and variation of the final product?
Ingredient A 70 ± 3.00 grams
Ingredient B 20 ± 1.73 grams
Ingredient C 15 ± 1.73 grams
Ingredient D 10 ±- 1.00 grams

Question107: Which of the following is the BEST statement to make regarding the relationship between product precision and product production?

Question108: Which of the following control charts are more efficient than an X-bar chart at detecting small shifts in the mean?
I. CUSUM.
II. EWQR.
III. EWMA.

Question109: A process is turning out end items that have defects of type A or type B or both. If the probability of type A defect is 0.1 and of a type B is 0.2, the probability that an end item will have no defect is

Question110: Which of the following distributions have the set of all real numbers as their domain?

Question111: Two advantages of process mapping are the ability to
I. Visualize the process being described.
II. Discover manufacturing problems only.
III. Discover quality problems only.
IV. Check current processes for duplication or redundancy.

Question112: You have been asked to sample a lot of 500 units from vendor whose past quality has been about 2% defective. A sample of 40 pieces is drawn from the lot and you have been told to reject the lot if you find two or more parts defective. What is the probability of finding two or more parts defective?

Question113: The hypergeometric distribution should be used instead of the binomial distribution when

Question114: Which of the following is NOT a method for customer service data collection?

Question115: Which of the following actions or techniques is MOST useful in determining the original fundamental cause of a product or process nonconformance?

Question116: Typically Pareto diagrams are used for which of the following reasons?
I. To display the significant few categories.
II. To compliment attribute data charting.
III. To eliminate insignificant categories.
IV. To focus attention in priority order.

Question117: As the scatter of points about a regression line becomes less, r2 will

Question118: If a sample size of 16 yields an average of 12 and standard deviation of 3, estimate the 95% confidence interval for the population (assume a normal distribution).

Question119: A pre-award evaluation of a supplier's quality system capability should NOT include consideration of

Question120: Which of the following problem-solving tools is a column graph which displays a static picture of the process?

Question121: What is the standard deviation of the values below?
4.5, 5.1, 6.2, 2.1, 3.9

Question122: What is the highest form of partnering with employees?

Question123: If the probability of a success on a single trial is 0.2 and 3 trials are performed, what is the probability of at least one success?

Question124: The first and most important step, in establishing a good corporate quality plan is

Question125: Analysis of data on all product returns is important because
I. Failure rates change with length of product usage.
II. Changes in design and in customer use are often well reflected.
III. Immediate feedback and analysis of product performance becomes available.

Question126: What is the standard deviation of the following data?
3.2, 3.1, 3.3, 3.3, 3.1

Question127: When trying to find all possible causes of a problem, which of the following tools would be useful?
I. Systematic troubleshooting and brainstorming.
II. Fishbone diagrams and histograms.
III. Checklists and scatter diagrams.
IV. Control charts and graphs.

Question128: In nonparametric statistics:
I. No assumptions are made concerning the distribution from which the samples are taken.
II. The parameters of the distribution do not relate to the parameters of the sample.
III. The sample and the distribution must have no parameters in common.

Question129: In the planning of a new major manufacturing program, the greatest quality effort should be put logically in

Question130: A graph of a data set, composed of a series of rectangles, each proportional in width to the range of values in a class and proportional in height to the number of items or fraction of items falling in these classes, is called which of the following?

Question131: Of the services listed below, which one performed by design engineering is of particular interest to QA personnel?

Question132: The primary advantage of the Latin square design, compared to the factorial design, is that

Question133: A quality control program is considered to be

Question134: Given the data below, what is the 90% confidence interval for the variance?
22, 23, 19, 17, 29, 25

Question135: Quality audits do NOT provide

Question136: A process has been experiencing problems lately. The operators charting the process have identified the cause to be due to a change in incoming materials. This problem is

Question137: Which of the following nondestructive testing methods can be used to evaluate sub-surface discontinuities in aluminum bar stock?
I. Microwave.
II. Magnetic particle.
III. Pulse echo.
IV. Eddy current.

Question138: A system was designed with 3 capacitors. When the system is first activated all capacitors are operating.
The system continues to operate as long as at least 1 capacitor is operating. This is an example of

Question139: Which of the following statements is CORRECT?

Question140: The term "quality audit" can refer to the appraisal of the quality system of
I. An entire plant or company.
II. One product.
III. One major quality activity.

Question141: What is the key ranking difference between the Deming philosophy and the Malcolm Baldrige award criteria?

Question142: Which of the following are TRUE statements regarding the use of visual inspection?
I. Reference standards can be used.
II. It provides consistency between inspectors.
III. It is relatively expensive.
IV. It can be quickly performed.

Question143: What order do the following corrective action steps normally take for nonconforming product?
I. Analyze the problem.
II. Assign responsibility.
III. Take preventive action.
IV. Evaluate potential importance.
V. Investigate possible causes.

Question144: The Malcolm Baldrige award is open for competition among which of the following?
I. Large manufacturing businesses.
II. Large and small manufacturing businesses.
III. Service organizations.
IV. Large service companies.

Question145: Writing and establishing process control procedures is

Question146: One-way analysis of variance is MOST similar in its objectives to

Question147: The maximum allowable percent defective for the process average is the

Question148: An experiment with two factors, in which all levels of one variable are run at each level of the second variable, is called a

Question149: Normally, complaint data for both a product or service organization should provide

Question150: An X-bar chart has shown control for a long time. You see that points for the last 50 samples are all very near the center line on the chart. In fact, they are all within one sigma of the center line. This probably indicates that

Question151: A "p" chart

Question152: The equation below represents the:

Question153: What does a corrective action do to prevent an existing noncomformity, defect or undesirable situation from recurring?

Question154: What are the major disadvantages of having an improvement team that is too large?
I. Difficulty in having constructive input from the entire group.
II. Difficulty in arriving at consensus.
III. Difficulty in finding large meeting facilities.
IV. Difficulty, on the part of the recorder, in keeping up with more paperwork.

Question155: Which of the following would be the MOST important considerations when establishing inspection points within a production operation?
I. Inspection to prevent defects from entering the system.
II. Inspection after all operations (both manual and automated).
III. Inspection prior to a painting or masking operation.

Question156: Given the following probabilities
1 or more defects = .70
2 or more defects = .35
3 or more defects = .15
4 or more defects = .03
What is the probability of 2 or fewer defects?

Question157: Applications for surface plate includes which of the following?
I. Referencing plane for length measurements.
II. Referencing plane for parallelism measurements.
III. Establishing a datum plane for dimensional layout.
IV. Waiting place for delicate parts.
V. Keeping extra gages when not in use.

Question158: A process is normally distributed with a mean of 200 and a variance of 25. One item is randomly selected, what is the probability of this item having a value greater than 210?

Question159: A process is in control with a defect rate of 0.2%. A sampling plans calls for 30 items to be selected at random, and for the process to be shut down and corrected if any defects are found. How often will the process be shut down without a change in the defect rate?

Question160: The sample size for a product quality audit should be