You are using the Mann-Whitney U test for a small sample and have been given the following summary:
Using a 5 per cent significance level:
a. You would compare a T value of 10 with a critical value of U of 6 and reject null hypothesis
b. You would compare a T value of 10 with a critical value of U of 6 and not reject null hypothesis
c. You would compare a T value of 10 with a critical value of U of 6 and reject null hypothesis
d. You would compare a T value of 10.5 with a critical value of U of 12 and not reject null hypothesis