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Cost of Pizzas A pizza shop owner wishes to find the 95% confidence interval of the true
Chapter 7, Problem 24(choose chapter or problem)
QUESTION:
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 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.
Questions & Answers
QUESTION:
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 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.
ANSWER:Step 1 of 4
Given:
\(\begin{array}{l} E=0.15 \\ \sigma=0.26 \end{array}\)