Reading proficiency:An educator wants to construct a99.5% confidence interval for the proportion of elementary school children in Colorado who are proficient in reading.Part:0 / 3

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(a) The results of a recent statewide test suggested that the proportion is0.73. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of0.03?

A sample of1726elementary school children is needed to obtain a99.5%confidence interval with a margin of error of0.03

(b) Estimate the sample size needed if no estimate ofp is available.

A sample of_?__elementary school children is needed to obtain a99.5%confidence interval with a margin of error of0.03

Please answer (B)