Solution Found!
Suppose that in Exercise 8-14 you wanted the total width
Chapter 8, Problem 17E(choose chapter or problem)
QUESTION:
Suppose that in Exercise 8-14 you wanted the total width of the two-sided confidence interval on mean life to be six hours at 95% confidence. What sample size should be used?
Questions & Answers
QUESTION:
Suppose that in Exercise 8-14 you wanted the total width of the two-sided confidence interval on mean life to be six hours at 95% confidence. What sample size should be used?
ANSWER:
Step 1 of 2
Given,
Error in estimating the mean life, E = 6 Hrs
CI = 95%
From exercise 8.14, we have
Sample size, n = 20.
The standard deviation,