A normal probability plot of the n = 26 observations on escape time given in Exercise 36
Question:
a. Calculate an upper confidence bound for population mean escape time using a confidence level of
95%.
b. Calculate an upper prediction bound for the escape time of a single additional worker using a prediction level of 95%. How does this bound compare with the confidence bound of part (a)?
c. Suppose that two additional workers will be chosen to participate in the simulated escape exercise.
Denote their escape times by X27 and X28, and let Xnew denote the average of these two values. Modify the formula for a PI for a single x value to obtain a PI for Xnew, and calculate a 95% two-sided interval based on the given escape data.
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Related Book For
Probability And Statistics For Engineering And The Sciences
ISBN: 9781305251809
9th Edition
Authors: Jay L. Devore
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