The U test was created by
a. Wilcoxon
b. Mann and Whitney
c. Kruskal and Wallis
d. Friedman
Question 2
With a single-sample t ratio, the null hypothesis states that
a. the sample mean could readily be part of the same distribution whose overall mean is
already known.
b. the sample mean in all likelihood could not be part of the same
distribution whose overall mean is already known
c. the sample mean and the population mean are significantly different values
d. none of these, since the null hypothesis always assumes that at least two sample means
have been obtained
