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In a random sample of six mobile devices, the mean repair cost was \$70.00 and the standard deviation was \$11.00. Assume the population is normally distributed and use a t-distribution to find the margin of error and construct a 95% confidence interval forte population mean. Interpret the results. The 95% confidence interval for the population m ean μ is (DO). Round to two decimal places as needed.) The margin of error is s (Round to two decimal places as needed.)...

• ### In a random sample of four mobile devices, the mean repair cost was \$60.00 and the...

In a random sample of four mobile devices, the mean repair cost was \$60.00 and the standard deviation was \$14.00. Assume the population is normally distributed and use a t-distribution to find the margin of error and construct a 90% confidence interval for the population mean. Interpret the results. The 90% confidence interval for the population mean is (DO (Round to two decimal places as needed.) The margin of error is \$ (Round to two decimal places as needed.) Interpret...

• ### In a random sample of six microwave​ ovens, the mean repair cost was ​\$65.00 and the...

In a random sample of six microwave​ ovens, the mean repair cost was ​\$65.00 and the standard deviation was ​\$12.50. Assume the population is normally distributed and use a​ t-distribution to construct a 90​% confidence interval for the population mean mu. What is the margin of error of mu​? Interpret the results. The 90​% confidence interval for the population mean mu is ​( nothing​, nothing​). ​(Round to two decimal places as​ needed.) The margin of error is nothing. ​(Round to...

• ### Libel In a random sample of four mobile devices, the mean repair cost was \$60.00 and...

Libel In a random sample of four mobile devices, the mean repair cost was \$60.00 and the standard deviation was \$13.50. Assume the population is normally distrbuted and use at distribution to find the margin of error and construct a 90% confidence interval for the population mean. Interpret the results ol The 90% confidence interval for the population mean pis (C. (Round to two decimal places as needed.) The margin of error iss (Round to two decimal places as needed)...

• ### AM You are given the sample mean and the population standard deviation. Use this information to...

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. If convenient, use technology to construct the confidence intervals. A random sample of 35 home theater systems has a mean price of \$144.00. Assume the population standard deviation is \$15.60. Construct a 90% confidence interval for the population mean. The 90% confidence...

• ### In a random sample of six mobile​ devices, the mean repair cost was ​\$80.00 and the...

In a random sample of six mobile​ devices, the mean repair cost was ​\$80.00 and the standard deviation was ​\$12.00. Assume the population is normally distributed and use a​ t-distribution to find the margin of error and construct a 95​% confidence interval for the population mean. Interpret the results. The 95​% confidence interval for the population mean mu is

• ### You are given the sample mean and the population standard deviation. Use this information to construct...

You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence ntervals 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 45 home theater systems has a mean price of \$138.00. Assume the population standard deviation is 516.40. Construct a 90% confidence interval for the population mean. The 90% confidence interval...

• ### in a random sample of four microwave ovens, the mean repair cost was 65.00 and the...

in a random sample of four microwave ovens, the mean repair cost was 65.00 and the standard deviation was 12.50 assume the population is normally distributed and use a t-distribution to construct a 95% confidence interval for the population mean u what is the margin of error of u? interpret the results In a Round to two decimal places as needed.)

• ### Question Help In a random sample of live microwave ovens, the mean repair cost was \$60.00...

Question Help In a random sample of live microwave ovens, the mean repair cost was \$60.00 and the standard deviation was \$12.00. Assume the population is normally distributed and use at distribution to construct a 90% confidence interval for the population mean . What is the margin of error of ? Interpret the results The 90% confidence interval for the population mean (Round to two decimal places as needed.) is C D Enter your answer in the edit fields and...

• ### A. A random sample of 32 different juice drinks has a mean of 98 calories per...

A. A random sample of 32 different juice drinks has a mean of 98 calories per serving and a standard deviation of 31.5 calories. Construct a 99% confidence interval of the population mean number of calories per serving, and interpret the 99% confidence interval in 1 sentence: B. A random sample of 50 standard hotel rooms in Philadelphia, PA, has a mean nightly cost of \$189.99 and a standard deviation of \$35.25. Construct a 95% confidence interval of the mean...