Nielsen Media Research, children (ages 2€“11) spend an average of 21 hours 30 minutes watching television per week while teens (ages 12€“17) spend an average of 20 hours 40 minutes. Based on the sample statistics obtained below, is there sufficient evidence to conclude a difference in average television watching times between the two groups? Use a 0.01.

a. State the hypotheses and identify the claim.
b. Find the critical value(s).
c. Compute the test value.
d. Make the decision.
e. Summarize the results.

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Teens Sample mean Sample variance Sample size Children 22.45 16.4 15 18.50 18.2 15