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Question: Complaints concerning excessive commercials seem to grow as the amount of "clutter," including commercials and advertisements for other television shows, steadily increases on network and cable television. A recent analysis by Nielsen Monitor-Plus compares the average non program minutes in an hour of prime time for both network and cable television. Data for selected years are shown as follows.
a. Calculate the correlation coefficient for the average non program minutes in an hour of prime time between network and cable television.
b. Conduct a hypothesis test to determine if a positive correlation exists between the average non program minutes in an hour of prime time between network and cable television. Use a significance level of 0.05 and assume that these figures form a random sample.
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