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Cost of Pizzas A pizza shop owner wishes to find the 99% confidence interval of the true mean cost of a large plain pizza. How

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Cost of Pizzas A pizza shop owner wishes to find the 99% confidence interval of the true mean cost of a large plain pizza. How large should the sample be if she wishes to be accurate to within $0.15? A previous study showed that the standard deviation of the price was $0.26. Round your final answer up to the next whole number. The owner needs at least a sample of pizzas. X

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