Author Question: Mortality is a problem in research because _____. a. when subjects drop out, we don't know ... (Read 20 times)

Chloeellawright · **on:** Jun 19, 2018

Mortality is a problem in research because _____.

a. when subjects drop out, we don't know exactly how the results are affected
b. without random assignment, the experimenter can't control who is in which group
c. it means the comparison group was never equivalent to the treatment group
d. when subjects die, the researcher could be named in a lawsuit

Question 2

If one measured the height of all the women at a university and took an average of the data, the university women would be a sample of the population of all university women in the world.

Indicate whether the statement is true or false

KKcool · **Reply #1 on:** Jun 19, 2018

Answer to Question 1

A
Usually subjects drop out of one group more than another. The true effect of the treatment is thereby obscured.

Answer to Question 2

T