In conducting a Mann-Whitney U test when the sample size is ...

[charchew]

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

[ttt030911]

Answer to Question 1

TRUE

Answer to Question 2

TRUE

[charchew]

Thanks for the timely response, appreciate it

[bblaney]

Excellent