Suppose you are interested in measuring the amount of time on average it takes you to make your commute to school. Over 18 random days, you estimated that the average time is 38.4 minutes with a standard deviation of 5.362 minutes. (a) Construct a 90% confidence interval for the mean commute time to school. Round your answers to two decimal places. (b) How many measurements must be averaged to get a margin of error of 0.05 with 90% confidence? (c) Assuming n=84, construct a 90% confidence interval for the mean commute time to school.
Suppose you are interested in measuring the amount of time on average it takes you to make your commute to school. Over 18 random days, you estimated that the average time is 38.4 minutes with a standard deviation of 5.362 minutes. (a) Construct a 90% confidence interval for the mean commute time to school. Round your answers to two decimal places. (b) How many measurements must be averaged to get a margin of error of 0.05 with 90% confidence? (c) Assuming n=84, construct a 90% confidence interval for the mean commute time to school.
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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Suppose you are interested in measuring the amount of time on average it takes you to make your commute to school. Over 18 random days, you estimated that the average time is 38.4 minutes
with a standard deviation of 5.362 minutes.
(a) Construct a 90% confidence interval for the
(b) How many measurements must be averaged to get a margin of error of 0.05 with 90% confidence?
(c) Assuming n=84, construct a 90% confidence interval for the mean commute time to school.
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