Question

For many years, TV executives used the guideline that 30% of the audience was watching each of the traditional big three prime-time networks and 10% was watching cable stations on a weekday night. A random sample of 550 viewers in the Tampa–St. Petersburg, Florida, area last Monday night showed that 190 homes were tuned in to the ABC affiliate, 100 to the CBS affiliate, and 165 to the NBC affiliate, with the remainder viewing a cable station. At the 0.02 significance level, can we conclude that the guideline is still reasonable? H0: The proportions are as stated. H1: The proportions are not as stated. State the decision rule using 0.02 significance level. (

Answer 1

H0: The proportions are as stated.

H1: The proportions are not as stated.

P ABC = 0.3

P CBS = 0.3

P NBC = 0.3

P CABLE = 0.1

OBSERVED VALUES

ABC = 190

CBS = 100

NBC = 165

TOTAL = 550

CABLE = (550- ( 190+100+165)) = 95