In a random sample of five people, the mean driving distance to work was 24.8 miles and the standard deviation was 7.9 miles. Assuming the population is normally distributed and using the t-distribution, a 95% confidence interval for the population mean u is (15.0, 34.6) (and the margin of error is 9.8). Through research, it has been found that the population standard deviation of driving distances to work is 8.4. Using the standard normal distribution with the appropriate calculations for a standard deviation that is known, find the margin of error and construct a 95% confidence interval for the population mean u. Interpret and compare the results.

In a random sample of five people, the mean driving distance to work was 24.8 miles and the standard deviation was 7.9 miles. Assuming the population is normally distributed and using the t-distribution, a 95% confidence interval for the population mean u is (15.0, 34.6) (and the margin of error is 9.8). Through research, it has been found that the population standard deviation of driving distances to work is 8.4. Using the standard normal distribution with the appropriate calculations for a standard deviation that is known, find the margin of error and construct a 95% confidence interval for the population mean u. Interpret and compare the results.

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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