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The price of large pizzas in a town are normally distributed with an average mean $21.50 and standard deviation of $1.30. Suppose we take a

The price of large pizzas in a town are normally distributed with an average mean $21.50 and standard deviation of $1.30. Suppose we take a sample of 9 pizzas. What is the probability that the sample mean will be between $21 and $23?

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