1. Mary is interested in determining if active learning strategies promote better student learning than passive learning strategies. She teaches groups of volunteer students for one hour, using active learning strategies with half of the students and passive learning strategies with the other half of the students. The students are then given a test over the material and Mary records the number of items each student answers correctly. The null hypothesis for this study is

Select one:

a. There is no difference between average marks obtained by students taught by active

learning strategies and those taught by passive learning strategies.

b. There is no difference between marks obtained by students taught by active

learning strategies and those taught by passive learning strategies.

c. The average marks obtained by students taught by active

learning strategies is greater than those taught by passive learning strategies

d. The average marks obtained by students taught by active

learning strategies is less than those taught by passive learning strategies.

2. Mary is interested in determining if active learning strategies promote better student learning than passive learning strategies. She teaches groups of volunteer students for one hour, using active learning strategies with half of the students and passive learning strategies with the other half of the students. The students are then given a test over the material and Mary records the number of items each student answers correctly. The statistical analysis should be performed on the data for this study is

Select one:

a. Chi-Square Test

b. Regression Analysis

c. t-test for the difference between two means

d. Correlational Analysis

3. An industrial-organizational psychologist is in charge of evaluating the effect of employee training procedures aimed at increasing the efficiency of processing client inquiries at an international company. This company receives many inquiries about its products and services over the telephone, via e-mail, and through regular mail. There is a multi-step process for handling these inquiries, the details of which need not concern us. Twenty employees are identified and randomly assigned in equal numbers (n = 10) to two different training conditions (A and B). The dependent measure is number of inquiries processed correctly by each employee in a 72-hour work period following the week-long training. Data are collected from all 20 participants. The process of randomly assigning employees to the training programs is

Select one:

a. to ensure that the two groups are similar in all aspects except for the training method.

b. to ensure fairness .

c. to manipulate the independent variable.

d. to make the study more manageable

4.Latitia conducted an experiment in which all the men watched an aggressive television program,

and all the women watched a non-aggressive television program. Her results showed that people

who watched the aggressive program were later more aggressive than people who watched the

non-aggressive program. She concludes that aggressive television programming is detrimental.

What is the biggest problem in Latitia's experiment?

Select one:

a. She should have used a correlated-groups design instead of an independent-groups design.

b. None of the above; there are no problems in Latitia's experiment.

c. She has not used random selection procedures.

d. She has confounded gender and type of television program.