a)Test at the 1% significance level, do the data provide sufficient evidence to conclude that the amount of television watched per day last year by the average person differed from that in 2005? (b)What is the P-value of the test in part (a)? (c)Obtain a confidence interval corresponding to the test in part (a). (d)Does the interval in part (c) support the result in part (a)? Explain your answer.
. Previous studies showed that the average person watched 4.55 hours of television per day in 2005. A random sample of 20 people gave the following number of hours of television watched per day for last year. The sample mean is ?̅=4.76 hours and the sample standard deviation is ? = 2.30 hours. (See data on file: M08_Hour_Q8.xlsx)
(a)Test at the 1% significance level, do the data provide sufficient evidence to conclude that the amount of television watched per day last year by the average person differed from that in 2005?
(b)What is the P-value of the test in part (a)?
(c)Obtain a confidence interval corresponding to the test in part (a).
(d)Does the interval in part (c) support the result in part (a)? Explain your answer.
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