Author Question: Distribution-free tests and parametric tests differ in their null hypotheses in that a. ... (Read 37 times)

JMatthes · **on:** Jun 20, 2018

Distribution-free tests and parametric tests differ in their null hypotheses in that

a. distribution-free tests have a less specific null hypothesis.
b. distribution-free tests make very strong assumptions about the mean.
c. distribution-free tests don't really have a null hypothesis.
d. parametric tests have rather loose null hypotheses.

Question 2

Tied scores often present a problem in distribution-free tests. The most common way to deal with them in a Mann-Whitney test is to

a. flip a coin.
b. use a random number table.
c. assign tied ranks.
d. throw out the tied data.