Question #18403

3. Suppose you are concerned about the amount of violence on TV. You decide to randomly select 10 TV programs, watch them, and count the number of “violent scenes” in each. Here is the data you collected: 32 12 20 10 4 18 25 26 17 14. Is there evidence that the (claim) number of “violent scenes” is at least 21 scenes?

Expert's answer

H0: N<=21

At first, standard deviation ofa sample s=8.34 sample mean is 17.8 statistic is

t=(17.8-21)/(8.34/sqrt(10))=-1.21. At a confidence level of 95% there is

not enough evidence to reject H0.

At first, standard deviation ofa sample s=8.34 sample mean is 17.8 statistic is

t=(17.8-21)/(8.34/sqrt(10))=-1.21. At a confidence level of 95% there is

not enough evidence to reject H0.

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