C (Statistical Process Control (SPC), moderate)

44. The mean and standard deviation for a process for which we have a substantial history are = 120 and = 2. For the variable control chart, a sample size of 16 will be used. What is the mean of the sampling distribution?

a. 1/8 (0.125)

b. 0.5

c. 2

d. 40

e. none of the above

e (Statistical Process Control (SPC), moderate) {AACSB: Analytic Skills}

45. Jars of pickles are sampled and weighed. Sample measures are plotted on control charts. The ideal weight should be precisely 11 oz. Which type of chart(s) would you recommend?

a. p-charts

b. c-charts

c. - and R-charts

d. -, but not R-charts

e. both p- and c-charts

C (Statistical Process Control (SPC), moderate)

46. If = 23 ounces, = 0.4 ounces, and n = 16, the ±3 control limits will be

a. 21.8 to 24.2 ounces

b. 23 ounces

c. 22.70 to 23.30 ounces

d. 22.25 to 23.75 ounces

e. none of the above

c (Statistical Process Control (SPC), moderate) {AACSB: Analytic Skills}

47. The usual purpose of an R-chart is to signal whether there has been a

a. gain or loss in dispersion

b. change in the percent defective in a sample

c. change in the central tendency of the process output

d. change in the number of defects in a sample

e. none of the above

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