SOLUTION: According to AccuData Media Research, 36% of televisions within the chicago city limits are tuned to "Eyewitness News" at 5:00 on sunday nights. At 5:00 pm on a given sunday, 2500
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Question 1082473: According to AccuData Media Research, 36% of televisions within the chicago city limits are tuned to "Eyewitness News" at 5:00 on sunday nights. At 5:00 pm on a given sunday, 2500 such television are randomly selected and checked to determine what is being watched. Would it be unusual to find that 925 of the 2500 televisions are turned to "Eyewitness News"?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
According to AccuData Media Research, 36% of televisions within the chicago city limits are tuned to "Eyewitness News" at 5:00 on sunday nights. At 5:00 pm on a given sunday, 2500 such television are randomly selected and checked to determine what is being watched. Would it be unusual to find that 925 of the 2500 televisions are turned to "Eyewitness News"?
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sample proportion:: 925/2500 = 0.37
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z(0.37) = (0.37-0.36)/sqrt(0.36*0.64) = 0.208
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Ans:: Not unusual ; only 0.2 standard deviations from the mean
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Cheers,
Stan H.
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