smartphones. you collect an SRS of n=75 students and obtain x= 3.17 hours with s=1.36 hours a) report the 95% confidence interval for u, the average number of hours per month that students at your university use the internet on a computer b) use this interval to test whether the average time for students at your university is different from the average reported by Nielsen. Use the 5% significance level. Summarize your results

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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the Nielsen company reports that US residents aged 18 to 34 years spend an average of 2.83 hours per day using an app or the web on a smartphone. you wonder if this is true for students at your large university because you rarely see students not using their smartphones. you collect an SRS of n=75 students and obtain x= 3.17 hours with s=1.36 hours a) report the 95% confidence interval for u, the average number of hours per month that students at your university use the internet on a computer b) use this interval to test whether the average time for students at your university is different from the average reported by Nielsen. Use the 5% significance level. Summarize your results
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