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12 May, 20:01

A sample of restaurants in a city shows that the average cost of an appetizer is $6.32 with a standard deviation of $0.47. A brand new restaurant wants to get noticed by offering appetizers for a much lower price. To determine the lower price, should the formula use a z-value that is greater than or less than - 1?

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  1. 12 May, 23:30
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    The answer is greater that - 1
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