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A random sample of 40 television viewers was asked if they had watched the current week’s American Idol show. The following data represent their responses:
a. Calculate the proportion of viewers in the sample who indicated they watched the current week’s episode of American Idol.
b. Compute a 95% confidence interval for the proportion of viewers in the sample who indicated they watched the current week’s episode of American Idol.
c. Calculate the smallest sample size that would produce a margin of error of 0.025 if the population proportion is well represented by the sample proportion in part a. |
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