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a researcher wishes to estimate with 90% confidence the population proportion of adults who say chocolate...

a researcher wishes to estimate with 90% confidence the population proportion of adults who say chocolate is their favorite ice cream flavor. Her estimate must be accurate within 2% of the population.

A, no preliminary estimate is available find the minimum sample size needed.

B, find the minmum sample size needed, using prior study that found that 34% of the respondents said their favorite flavor of ice cream is chocolate.

C. compare the results

Math   Statistics-And-Probability   
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