Recently, a study was done to determine whether the median speed on a section of highway is the same for cars versus trucks. A sample of 12 cars (n1 = 12) and 15 trucks (n2 = 15) was collected. If the Mann-Whitney U test is to be performed using an alpha = .05, the test critical U value is 49.

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The critical value for the Mann-Whitney U test with n1 = 12 and n2 = 15 at alpha = .05 is 49.

Recently, a Study Was Done to Determine Whether the Median