You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% c
Posted: Wed May 11, 2022 10:09 am
You are given the sample mean and the population standard deviation. Use this information to construct the 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 80 dates, the mean record high daily temperature in a certain city has a mean of 84.49°F. Assume the population standard deviation is 15.31°F. The 90% confidence interval is (81.67.87.31 (Round to two decimal places as needed.) The 95% confidence interval is (81.14. 87.84 (Round to two decimal places as needed.) Which interval is wider? Choose the correct answer below. The 95% confidence intervall The 90% confidence interval Interpret the results.