You are a data analyst for a health insurance company and want to estimate the population mean of the surgery durations for all brain tumor patients. To do so, you select a random sample of 32 brain tumor surgery patients, and you record the surgery duration for each. Assume it is known that the population standard deviation of the durations of all brain tumor surgeries is 1.68 hours. Based on your sample, follow the steps below to construct a 95% confidence interval for the population mean of the surgery durations for all brain tumor patients. (If necessary, consult a list of formulas.) (a)Click on "Take Sample" to see the results from your random sample of 32 brain tumor patients. Take Sample Number of patients Sample mean Sample standard deviation 32 3.54 1.33 Population standard deviation 1.68 Enter the values of the sample size, the point estimate for the population mean, the population standard deviation, and the critical value you need for your 95% confidence interval. (Choose the correct critical value from the table of critical values provided.) When you are done, select "Compute". Based on your sample, enter the lower and upper limits to graph the 95% confidence interval for the population mean of the surgery durations for all brain tumor patients.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

You are a data analyst for a health insurance company and want to estimate the population mean of the surgery durations for all brain tumor patients. To do so, you select a random sample of

brain tumor surgery patients, and you record the surgery duration for each. Assume it is known that the population standard deviation of the durations of all brain tumor surgeries is

1.68

hours.

Based on your sample, follow the steps below to construct a

95%

confidence interval for the population mean of the surgery durations for all brain tumor patients. (If necessary, consult a list of formulas.)

(a)Click on "Take Sample" to see the results from your random sample of

brain tumor patients.

Take Sample

Number of patients	Sample mean	Sample standard deviation
32	3.54	1.33

Population standard deviation
1.68

Enter the values of the sample size, the point estimate for the population mean, the population standard deviation, and the critical value you need for your

95%

confidence interval. (Choose the correct critical value from the table of critical values provided.) When you are done, select "Compute".

Based on your sample, enter the lower and upper limits to graph the

95%

confidence interval for the population mean of the surgery durations for all brain tumor patients.

Expert Solution