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In given Exercise, a small-scale preliminary survey has indicated that no more than 20% of the television households will tune in to the first episode of the miniseries. Given this information, how large must the sample be?

Exercise
There are approximately 109 million television households in the United States. A ratings service would like to know, within 5 percentage points and with 95% confidence, the percentage of these households who tune in to the first episode of a network miniseries. How many television households must be included in the sample?

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Category:- Statistics and Probability
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