Question: The mean and standard deviation for 20 Cornerbacks (CB) and 27 Wide Receivers (WB) running the 40-yard dash are: WR: Average = 4.4815 with a

The mean and standard deviation for 20 Cornerbacks (CB) and 27 Wide Receivers (WB) running the 40-yard dash are:

WR: Average = 4.4815 with a standard deviation = 0.10744

CB: Average = 4.5096 with a standard deviation = 0.09183

1) Test the hypothesis at 90% significance level that wide receivers are on average faster than Cornerbacks

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