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You are given the sample mean and the population standard deviation. Use this information to construct 90% and 95% confidence intervals for the popula

Confidence intervals
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asked 2021-05-14
You are given the sample mean and the population standard deviation. Use this information to construct 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 64 dates, the mean record high daily temperature in the Chicago, Illinois, area has a mean of 84.13∘F. Assume the population standard deviation is 14.56∘F.

Answers (1)

2021-05-15
90% confidence interval: (81.1361, 87.1239)
95% confidence interval: (80.5628, 87.6972)
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