Question
According to a 2018 report by the United States department of labor, civilian Americans spend 2.84 hours per day watching television. A faculty researcher, dr
According to a 2018 report by the United States department of labor, civilian Americans spend 2.84 hours per day watching television. A faculty researcher, dr sander at California polytechnic state university conducts a study to see whether a different average applies to cal poly students. Suppose that for a random sample of 100 cal poly students the mean and standard deviation of hours per day spent watching tv turns out to be 3.01 and 1.97 hours, respectively. The data were used to find a 95% confidence interval: (2.619, 3.401) hours/day. Suppose that the data had actually been collected form a sample of 150 students and not 100 but everything else means and SD was the same as reported earlier. How if at all would the new 95% confidence interval based on these data differ from the interval mentioned earlier 2.619, 3.401 hours
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