A sample of size n=94 is drawn from a normal population whose standard deviation is a = 9.9. The sample mean is x = 40.38. Part 1 of 2 (a) Construct a 99.5% confidence interval for u. Round the answer to at least two decimal places. A 99.5% confidence interval for the mean is 0 <μ< 0. X Part 2 of 2 S (b) If the population were not approximately normal, would the confidence interval constructed in part (a) be valid? Explain.

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A sample of size n = 94 is drawn from a normal population whose standard deviation is a = 9.9. The sample mean is x = 40.38.
Part 1 of 2
(a) Construct a 99.5% confidence interval for u. Round the answer to at least two decimal places.
A 99.5% confidence interval for the mean is
Part 2 of 2
Recheck
<μ<
Type here to search
(b) If the population were not approximately normal, would the confidence interval constructed in part (a) be valid? Explain.
Try again
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et
S
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Transcribed Image Text:A sample of size n = 94 is drawn from a normal population whose standard deviation is a = 9.9. The sample mean is x = 40.38. Part 1 of 2 (a) Construct a 99.5% confidence interval for u. Round the answer to at least two decimal places. A 99.5% confidence interval for the mean is Part 2 of 2 Recheck <μ< Type here to search (b) If the population were not approximately normal, would the confidence interval constructed in part (a) be valid? Explain. Try again X et S Save For Later © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use 60°F O G
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