SOLUTION: Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 31% of the viewing audience in the area. In a survey of 100 viewers, 36% indicated that th

Question 1086294: Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 31% of the viewing audience in the area. In a survey of 100 viewers, 36% indicated that they watch the late evening news on this local CBS station. What is the z test statistic?

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 31% of the viewing audience in the area. In a survey of 100 viewers, 36% indicated that they watch the late evening news on this local CBS station. What is the z test statistic?
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sample proportion:: 0.36
z(0.36) = (0.36-0.31)/sqrt(0.31*0.69/100) = 1.08
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Cheers,
Stan H.
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