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"? 
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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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