US Energy Information Administration wants to estimate the average amount of money that a Texan spends on gas in one year. They decide to compute a 95% confidence interval. From a sample of 32 Texans, they calculate a sample mean of $850 and a sample standard deviation of $400. What is the lower limit of their 95% confidence interval? 994.22 850 850 70.71 705.78
US Energy Information Administration wants to estimate the average amount of money that a Texan spends on gas in one year. They decide to compute a 95% confidence interval. From a sample of 32 Texans, they calculate a sample mean of $850 and a sample standard deviation of $400. What is the lower limit of their 95% confidence interval? 994.22 850 850 70.71 705.78
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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US Energy Information Administration wants to estimate the average amount of money that a Texan spends on gas in one year. They decide to compute a 95% confidence interval. From a sample of 32 Texans, they calculate a sample mean of $850 and a sample standard deviation of $400.
What is the lower limit of their 95% confidence interval?
994.22
850
850
70.71
705.78
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