a.
Construct the 95% confidence interval for
a.
Answer to Problem 93E
The 95% confidence interval for
Explanation of Solution
Here,
The mean and variance of
From Table 4: Normal Curve Areas, the z value corresponding to 0.025
The 95% confidence interval for
Thus, the 95% confidence interval for
b.
Construct the 95% confidence interval for
b.
Answer to Problem 93E
The 95% confidence interval for
Explanation of Solution
Here,
As
The 95% confidence interval for
Thus, the 95% confidence interval for
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