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Find the 95% confidence interval for the variance and standard deviation of the ounces of coffee that a machine dispenses in 12-ounce cups. Assume the

Find the 95% confidence interval for the variance and standard deviation of the ounces of coffee

that a machine dispenses in 12-ounce cups. Assume the variable is normally distributed. The data is provided on the "Coffee" worksheet in the Excel workbook. values are:

Coffee in cup (oz.)
12.03
12.10
10.02
11.98
12.00
12.05
11.97
11.99

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