Probability and Statistics for Engineering and the Sciences
9th Edition
ISBN: 9781305251809
Author: Jay L. Devore
Publisher: Cengage Learning
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Chapter 7.3, Problem 40E
a.
To determine
Find the assumptions required about the population of tensile strength to obtain lower prediction bound for the tensile strength of next specimen.
b.
To determine
Check whether it is reasonable to conclude that the population of tensile strength follows
c.
To determine
Find and interpret the 95% lower prediction bound for the tensile strength of next specimen.
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10.17 Refer to Exercise 10.16. Assuming that equal sample sizes will be taken from the two populations, how large a sample should be taken from each of the populations to obtain a 99% confidence interval for pA - pB with a width of at most .02? (Hint: Use p^ A = 0.3 and p^ B = .15 from Exercise 10.16.
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Chapter 7 Solutions
Probability and Statistics for Engineering and the Sciences
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