Solution: Cost of Pizzas. A pizza shop owner wishes to find the 95% confidence interval of the true mean cost of the large plain pizza. How large should
Question: Cost of Pizzas. A pizza shop owner wishes to find the 95% confidence interval of the true mean cost of the large plain pizza. How large should the sample be if she wishes to be accurate within $0.15? A previous study showed that the standard deviation of the price was $0.26.
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![[Solution Library] Credit Union Incomes. Find the](/images/solutions/MC-solution-library-32057.jpg "[Solution Library] Credit Union Incomes. Find the 90% confidence interval")
[Solution Library] Credit Union Incomes. Find the 90% confidence interval
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