Dr. Paul was interested in the effects of test anxiety on
concentration abilities. Using an anxiety questionnaire, he
measured student anxiety levels when the students arrived at his
laboratory and then again immediately before taking an examination.
Dr. Paul hypothesized that participants in his study would have
higher anxiety scores immediately prior to the completion of the
exam compared to when they first came in.
1). What is the appropriate hypothesis test to
use?
a, regression
b, independent samples t-test
c, correlation
d, single sample t test
e, z-test
f, paired samples t test
2) Why is that the appropriate test?
a, comparing a sample to a population with known mean and
standard deviation
b, comparing a sample to a population with a known mean and
unknown standard deviation
c, 1 nominal and 1 scale variable; 2 unrelated samples
d, 1 nominal and 1 scale variable; 2 related samples
e, There are 2 scale variables and the researcher wants to test
for a relationship
f, There are 2 scale variables and the researcher wants to make
a prediction