Course Home 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. Assignments From a random sample of 56 dates, the mean record high daily temperature in a certain city has a mean of 84.35°F. Assume the population standard deviation is 13.60°F. Gradebook The 90% confidence interval is ( ). Chapter Contents (Round to two decimal places as needed.) eText Multimedia Library Study Plan Tools for Success Accessible Resources

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. If convenient, use technology to construct the confidence intervals. A random sample of 35 home theater systems has a mean price of $145.00. Assume the population standard deviation is $18.10. Construct a 90% confidence interval for the population mean. The 90% confidence interval is (139.97, 150.03). (Round to two decimal places as needed.) Construct a 95% confidence interval for the population mean. The 95% confidence interval is ( 139 , 151). (Round to two decimal places as needed.) Interpret the results. Choose the correct answer below O A. With 90% confidence, it can be said that the sample mean price lies in the first interval. With 95% confidence, it can be said that the sample mean price lies in the second interval. The 95% confidence interval…

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 74 dates, the mean record high daily temperatur in a certain city has a mean of 85.27°F. Assume the population standard deviation is 14.71°F. Which interval is wider? Choose the correct answer below. The 95% confidence interval O The 90% confidence interval Interpret the results. A. You can be 90% confident that the population mean record high temperature is between the bounds of the 90% confidence interval, and 95% confident for the 95% interval. B. You can be certain that the mean record high temperature was within the 90% confidence interval for approximately 67 of the 74 days, and was within the 95% confidence interval for approximately 70 of the 74 days. C. You can be certain that the population mean record high…

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