Chapter 9, Problem 8CRE

To determine

To find: Whether there is sufficient evidence to conclude that the mean is different from the value 105 at 10% significance level.

Answer to Problem 8CRE

Explanation of Solution

Given:

Calculation:

From the provided output, it is clear that the 90% confidence interval is (99.61,110.03). Since, the above confidence interval contains the value 105. Thus, there is insufficient evidence to conclude that the mean is different from the value 105 at 10% significance level.