A regression model in which more than one independent variable is used to predict the dependent variable is called

A) a simple linear regression model.
B) a multiple regression model.
C) an independent model.
D) an adjusted prediction model.

In conducting the t-test for independent means, if you ______, the two means ______.

A) do not reject the null hypothesis; do not significantly differ from each other
B) do not accept the null hypothesis; are significantly equal to each other
C) reject the null hypothesis; do not significantly differ from each other
D) reject the alternative hypothesis; are significantly different from each other

The hypothesis of most interest to the researcher is:

A) the alternative hypothesis.
B) the null hypothesis.
C) both hypotheses are of equal interest.
D) Neither hypothesis is of interest.

A confidence interval is defined as:

A) a point estimate plus or minus a specific confidence level.
B) a lower and upper confidence limit associated with a specific level of confidence.
C) an interval that has a 95% probability of containing the population parameter.
D) a lower and upper confidence limit that has a 95% probability of containing the population parameter.

In which of the following steps of analyzing data is probability most important?

A) calculating measures of central tendency such as the mean or median
B) developing research hypotheses
C) examining your data by creating tables and figures
D) calculating inferential statistics

Evaluate the following: 25^3/2

A) 8.6
B) 37.5
C) 125
D) 5
E) 625