[Solution Library] Cost of Pizzas. A pizza shop owner wishes to find the 95% confidence interval of the true mean cost of a large plain pizza. How large
Question: Cost of Pizzas. A pizza shop owner wishes to find the 95% confidence interval of the true mean cost of a large plain pizza. How large should the sample e if she wishes to be accurate to within $0.15? A previous study showed that the standard deviation of the price was $0.26.
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