A sample of size n-92 is drawn from a normal population whose standard deviation is a-6.8. The sample mean is -40.49. Part 1 of 2 (a) Construct a 99.5% confidence interval for μ. Round the answer to at least two decimal places. A 99.5% confidence interval for the mean is

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A sample of size n-92 is drawn from a normal population whose standard deviation is a 6.8. The sample mean is x -40.49.
Part 1 of 2
(a) Construct a 99.5% confidence interval for μ. Round the answer to at least two decimal places.
A 99.5% confidence interval for the mean is
<<
Part 2 of 21
(b) If the population were not approximately normal, would the confidence interval constructed in part (a) be valid? Explain.
be valid since the sample size (Choose one) ▼large.
The confidence interval constructed in part (a) (Choose one)
X
Transcribed Image Text:A sample of size n-92 is drawn from a normal population whose standard deviation is a 6.8. The sample mean is x -40.49. Part 1 of 2 (a) Construct a 99.5% confidence interval for μ. Round the answer to at least two decimal places. A 99.5% confidence interval for the mean is << Part 2 of 21 (b) If the population were not approximately normal, would the confidence interval constructed in part (a) be valid? Explain. be valid since the sample size (Choose one) ▼large. The confidence interval constructed in part (a) (Choose one) X
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