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Johnny's Pizza guarantees all pizza deliveries within 30minutes of the placement of orders.A researcher wants to estimate the proportion of all pizzas delivered within 30minutes

Johnny's Pizza guarantees all pizza deliveries within 30minutes of the

placement of orders.A researcher wants to estimate the proportion of all

pizzas delivered within 30minutes by Johnny's.The 99% confidence interval

for the population proportion has a margin of error to within 0.02.

What is the most conservative estimate of the sample size?

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