Author Question: In conducting a Mann-Whitney U test when the sample size is greater than 20, the U test statistic ... (Read 149 times)

charchew · **on:** Jun 24, 2018

In conducting a Mann-Whitney U test when the sample size is greater than 20, the U test statistic can be assumed normally distributed.

Indicate whether the statement is true or false

Question 2

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. Indicate whether the statement is true or false