In a random sample of 8 people, the mean commute time to work was 36.5 minutes and the standard devlation was 7 4 minutes A 98% confidence interval using the t-distribution was calculated to be (28 7.44 3). After researching commute times to work, it was found that the population standard deviation is 86 minutes Find the margin of error and construct a 98% confidence interval using the standard.normal distribution with the appropriate calculations for a standard deviation that is known. Compare the results The margin of error of u is (Round to two decimal places as needed.)

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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In a random sample of 8 people, the mean commute time to work was 36.5 minutes and the standard devlation was 7 4 minutes A 98% confidence interval using
the t-distribution was calculated to be (28 7,44 3). After researching commute times to work, it was found that the population standard doviation is 86 minutes Find
the margin of error and construct a 98% confidence interval using the standard normal distribution with the appropriate calculations for a standard deviatice that is
known Compare the results
The margin of eror of u is
(Round to two decimal places as needed.)
Transcribed Image Text:In a random sample of 8 people, the mean commute time to work was 36.5 minutes and the standard devlation was 7 4 minutes A 98% confidence interval using the t-distribution was calculated to be (28 7,44 3). After researching commute times to work, it was found that the population standard doviation is 86 minutes Find the margin of error and construct a 98% confidence interval using the standard normal distribution with the appropriate calculations for a standard deviatice that is known Compare the results The margin of eror of u is (Round to two decimal places as needed.)
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