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In: Statistics and Probability

A movie theater manager believes the average amount of money customers spend on snacks is over...

A movie theater manager believes the average amount of money customers spend on snacks is over $15.

To test the claim, a theater employee tracks the spending of 25 randomly selected customers.

The sample mean is $17.08 with a sample standard deviation of $4.81.

a) What is the Null Hypothesis and the Alternative Hypothesis for the manager’s claim?

b) Assuming the population is normal, should we use the Normal z-test or the Student’s t-test?

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Expert Solution

orchestra answered 1 year ago
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