Question: 1) A pollster wants to construct a 95% confidence interval for the proportion of adults who plan to take a vacation this year. He estimates

1) A pollster wants to construct a 95% confidence interval for the proportion of adults who plan to take a vacation this year. He estimates from a poll last year that this proportion is 0.33. Using this estimate, what sample size is needed so that the confidence intervals will have a margin of error of 0.019?

2) A researcher wants to construct a 99% confidence interval for the proportion of people who changed jobs in the past year. What sample size is needed so that the confidence intervals will have a margin of error 0f 0.052?

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