Question 3 A random sample of 796 teenagers revealed that in this sample, the mean number of hours per week of TV watchi
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Question 3 A random sample of 796 teenagers revealed that in this sample, the mean number of hours per week of TV watchi
Question 3 A random sample of 796 teenagers revealed that in this sample, the mean number of hours per week of TV watching was y = 13.2, with a standard deviation of s = 1.6. Find and interpret a 95% confidence interval for the mean weekly TV-watching time for teenagers. Why can we use a t CI procedure in this problem?