Question 1

In hypothesis testing, the probability of rejecting H0 when H0 is true is denoted by which one of the following?

Accepted Answer

A)   α
B)   1 - α
C)   β
D)   1 - β A

Question 2

Which one of the following is an assumption of the independent t test?

Accepted Answer

A)   equal sample sizes
B)   independence
C)   linearity
D)   muticollinearity B

Question 3

In hypothesis testing, the probability of failing to reject H0 when H0 is true is denoted by which one of the following?

Accepted Answer

A)   α
B)   1 - α
C)   β
D)   1 - β B

Question 4

The number of hours elite athletes spent training per week was measured immediately before competition and immediately after. To determine if the mean number of hours differs before versus after competition, which statistical test would be generated?

Accepted Answer

A)   independent t test
B)   dependent t test
C)   simple regression
D)   z test

Question 5

A value of +.75 indicates which type of relationship?

Accepted Answer

A)   negative
B)   positive
C)   neutral

Question 6

The probability of making a Type I error when rejecting H0 when H0 is true, at a significance level of .10, is which one of the following?

Accepted Answer

A)   0%
B)   5%
C)   10%
D)   100%

Question 7

A researcher wants to determine if time in incarceration can be predicted by family home income. Which statistical test would be generated to answer this question?

Accepted Answer

A)   independent t test
B)   dependent t test
C)   simple regression
D)   two-factor ANOVA

Question 8

An increase of one point on the independent variable results in an increase of some value on the dependent variable. Which statistic is reflected in this statistic?

Accepted Answer

A)   criterion
B)   independent variable
C)   intercept
D)   slope

Question 9

A researcher has collected data on two categorical independent variables and one continuous dependent variable. If they are interested in using all the variables in one model, which one of the following statistical procedures is their only option?

Accepted Answer

A)   independent t test
B)   dependent t test
C)   simple regression
D)   two-factor ANOVA

Exam 2: Univariate and Bivariate Statistics Review

In hypothesis testing, the probability of rejecting H₀ when H₀ is true is denoted by which one of the following?