CSSBB Free Practice Test

- (Topic 1)
In a series of linked processes and associated feedback loops the product or service flows _____ and the information flows _____ .

1. A. rapidly, slower
2. B. downstream, upstream
3. C. evenly, digitally
4. D. sooner, later
5. E. to the customer, from the supplier
6. F. none of the above

Correct Answer: B

- (Topic 2)
An x-bar control chart has been established with control limits of 3.245 and 3.257, n = 5. An engineer collects the following sample and plots the average on the control chart: 3.257, 3,256, 3. 258, 3.259

1. A. the process is out of control
2. B. the process is not out of control
3. C. the engineer misused the control chart
4. D. the control limits are incorrect

Correct Answer: C

- (Topic 1)
A _____ from a sample is used to estimate a population ______. The two words that best fill these blanks are:

1. A. item, value
2. B. value, statistic
3. C. statistic, parameter
4. D. parameter, value
5. E. parameter, statistic

Correct Answer: C

- (Topic 1)
A medicine with efficacy of .52 is given to five patients. Find the approximate probability that at least one of the patients is cured. (Hint: Use the binomial formula.)

1. A. .975
2. B. .480
3. C. .531
4. D. .416
5. E. none of the above

Correct Answer: A

- (Topic 2)
In a certain sampling situation, = 0, = 0.08. The power of the sampling plan in this case is:

1. A. 0.08
2. B. 1.00
3. C. 0.92

Correct Answer: D

The formula for power of sampling plan is (1-) = 1-0.08 = 0.92