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The owner of a coffee shop wants to learn about the coffee buying habits of his...

The owner of a coffee shop wants to learn about the coffee buying habits of his customers. 60 customers are selected one week and the result is that the average purchase (in 10,000 rupiahs) is 7.25 with a standard deviation of 1.75. Hypothesis test at α = 0.05 that the average number of purchases does not equal 6.50?

Math   Statistics-And-Probability   
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Conclusion: There is evidence to conclude that the average number of purchases does not equal 6.50.

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