4- What does it mean when you use a 0.05 level of significance (alpha level) to evaluate statistical results?

A-You are ensuring that there is no more than a 5% chance of a Type I error (false positive).

B-It reflects the fact that your sample comprised at least 5% of the whole population of interest.

CYou are ensuring that there is no more than a 5% chance of a Type II error (false negative).

D-None of the above.

3- Which of these statements would be your directional hypothesis?

A-There is a relation between hours studying and grades on a test.

B-There is no relation between hours studying and grades on a test.

C-The more hours one studies, the higher their grades will be.

D-None of the above.

2-Which of these statements would be your nondirectional alternative hypothesis?

A-There is a relation between hours studying and grades on a test.

B-There is no relation between hours studying and grades on a test.

C-The more hours one studies, the higher their grades will be.

D-None of the above.

1-You are interested in exploring the relationship between hours studying and test grades. Which of these statements would be her null hypothesis?

A-There is a relation between hours studying and grades on a test.

B-There is no relation between hours studying and grades on a test.

C-The more hours one studies, the higher their grades will be.

D-None of the above.