The Coffee and Soup Machine at the Local Subway Station

The coffee and soup machine at the local subway station is supposed to fill cups with 6 ounces of soup. Ten cups of soup are bought with results of a mean of 5.93 ounces and a standard deviation of .13 ounces. How large a sample of soups would we need to be 95 percent confident that the sample mean is within .03 ounces of the population mean?

A) 97
B) 96
C) 73
D) 62
E) 10

Correct Answer:

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