A) The basic question underlying hypothesis testing is:

should the null hypothesis be rejected?

should the null hypothesis be retained?

could the relationship observed in the sample have occurred by chance?

is the null hypothesis more appropriate than the alternative hypothesis?

B) If you know the population standard deviation, you should perform a:

correlation

t-test

regression

z-test

C) If you don't know the population standard deviation, but you have the sample standard deviation, you should perform a:

correlation

t-test

regression

z-test

D) True or False?Alpha levels are always divided in half for two-tailed z-tests; use the halved alpha value to look up the critical z value in the z tables.

True

False