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Please help, and thank you You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95%
Please help, and thank you
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 55 home theater systems has a mean price of $117.00. Assume the population standard deviation is $19.50. Construct a 90% confidence interval for the population mean. The 90% confidence interval is ( (Round to two decimal places as needed.) Construct a 95% confidence interval for the population mean. The 95% confidence interval is (). (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 is wider than the 90%. O B. With 90% confidence, it can be said that the population mean price lies in the first interval. With 95% confidence, it can be said that the population mean price lies in the second interval. The 95% confidence interval is narrower than the 90%. O C. With 90% confidence, it can be said that the population mean price lies in the first interval. With 95% confidence, it can be said that the population mean price lies in the second interval. The 95% confidence interval is wider than the 90%Step by Step Solution
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