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View the photo and answer the following question. Identify the margin of error:  ____ miles per hour, square miles OR miles?

View the photo and answer the following question. Identify the margin of error:  ____ miles per hour, square miles OR miles?

MATLAB: An Introduction with Applications
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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View the photo and answer the following question.

Identify the margin of error:

 ____ miles per hour, square miles OR miles?

In a random sample of six people, the mean driving distance to work was 22.3 miles and the standard deviation was 5.2 miles. Assuming the population is normally distributed and using the t-distribution, a 99% confidence interval for the population mean u is (13.7, 30.9) (and the margin of error is 8.6). Through research, it has been found that the population standard deviation of driving distances to work is 3.7. Using the standard normal distribution with the appropriate calculations for a standard deviation that is known, find the margin of error and construct a 99% confidence interval for the population mean u. Interpret and compare the results.
Transcribed Image Text:In a random sample of six people, the mean driving distance to work was 22.3 miles and the standard deviation was 5.2 miles. Assuming the population is normally distributed and using the t-distribution, a 99% confidence interval for the population mean u is (13.7, 30.9) (and the margin of error is 8.6). Through research, it has been found that the population standard deviation of driving distances to work is 3.7. Using the standard normal distribution with the appropriate calculations for a standard deviation that is known, find the margin of error and construct a 99% confidence interval for the population mean u. Interpret and compare the results.
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