Exam 4

Question 1

Null Hypothesis

Answer 1

Statistical hypothesis that states that there is no difference between a parameter and a specific value, or that there is no difference between 2 parameters

Question 2

Alternative Hypothesis

Answer 2

Statistical hypothesis that states the existence of a difference between a parameter and a specific value, or states that there is a difference between 2 parameters

Question 3

Type 1 error

Answer 3

Occurs if you reject the null hypothesis when it is true

Question 4

Type 2 error

Answer 4

Occurs if you do not reject the null hypothesis when it is false

Question 5

Independent Samples

Answer 5

Two samples when the subjects selected for the 1st sample in no way influence the way the subjects are selected in the 2nd sample

Question 6

Dependent Samples

Answer 6

Two samples where the selection of subjects for the 1st group in some way influenced the selection of subjects for the other group

Question 7

Dependent Samples

Answer 7

When subjects are paired or matched in some way
Sometimes called matched-pair samples

Question 8

P-value

Answer 8

(or probably value) is the probability of getting a sample statistic in the direction of the alternative hypothesis when the null hypothesis is true