The techniques used to detect which population means differ are called multiple ____________________ methods.
Fill in the blank(s) with correct word
Q. 2____________________ variation is caused by specific events or factors that are frequently temporary.
Fill in the blank(s) with correct word
Q. 3When is the Tukey multiple comparison method used?
a. To test for normality.
b. To test for differences in pairwise means.
c. To test for equality of a group of population means.
d. To test equal variances.
Q. 4____________________ variation is caused by a number of randomly occurring events that are part of the production process.
Fill in the blank(s) with correct word
Q. 5Which of the following is true of Tukey's Multiple Comparison Method?
a. It is based on the studentized range statistic to obtain the critical value needed to construct individual confidence intervals.
b. It theoretically requires that all sample sizes be equal, or at least similar.
c. It is more powerful than the LSD method.
d. All of these choices are true.
Q. 6An x chart for a normally distributed random variable has control limits set at 3 standard errors from the centerline. One sample mean falls outside the control limits when the process is actually under control. The probability that this happened by chance is:
a. .997 c. .050
b. .500 d. .003
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