Question

An occupational psychologist wishes to assess two different methods of manager supervision in influencing employee productivity. One method involves constant supervision by the workplace manager, while the second method involves intermittent (every 15 minutes) supervision by the workplace supervisor.

To test whether constant versus intermittent supervision may influence workplace productivity differently, the psychologist first randomly selects 8 employees at his/her organization. Over the course of two weeks, each of the n = 8 employees is exposed to each of the two different supervision conditions. To control for any order effects, half of the participants were randomly assigned to receive constant supervision first, whereas the other half were randomly assigned to receive intermittent supervision first. After each week of supervision, the psychologist measures the productivity of each employee using a Productivity Scale. The scale ranges from a score of 0-35 (where higher numbers indicate higher levels of productivity).

Based on the above information, select True or False:

1. True/False: The type of Supervision Condition is the independent variable in this data set. The levels are: 1: Constant Supervision and 2: Intermittent Supervision

2. True/False: The Productivity scores from the Productivity Scale is the dependent variable in this data set.

3. True/False: The design of this study is within-subjects. Thus, a repeated-measures t-test should be conducted.

4.

5. Based on the above information, choose the correct set of null and alternative hypotheses for this test:

		H0: μ = 100 H1: μ ≠ 100
		H0: μ1 = μ2 3 H1: At least one pair of means significantly differs
		H0: μD = 0 H1: μD ≠ 0
		H0: μ1 = μ2 H1: μ1 ≠ μ2

6. QUESTION: Determine the critical region for this test at α (alpha) = .01

Please type either "directional" or "non-directional" in the blank below. Please remove the quotations for your answer!

According to the researchers hypothesis, this is a ___________ hypothesis test.

Please type a WHOLE number (e.g. 5) as your answer for the blank below.

The degrees of freedom for this hypothesis test is ________.

Please type a number rounded to the nearest THOUSANDTHS place (e.g. 2.971) as your answer for the blank below.

Please include either or both +/- signs before each value as you value for the blank below (e.g. +/-2.971).

The value of the critical region of this hypothesis test is _________

Answer 1

. True: The type of Supervision Condition is the independent variable in this data set. The levels are: 1: Constant Supervision and 2: Intermittent Supervision

2. True: The Productivity scores from the Productivity Scale is the dependent variable in this data set.

3. False: The design of this study is within-subjects. Thus, a repeated-measures t-test should be conducted.

4.

5. Based on the above information, choose the correct set of null and alternative hypotheses for this test:

H0: μ1 = μ2

H1: μ1 ≠ μ2

6. According to the researchers hypothesis, this is a "non-directional" hypothesis test.

7. The degrees of freedom for this hypothesis test is 8+8-2 = 14

8. The value of the critical region of this hypothesis test is -The value of the critical region of this hypothesis test is -2.145 and , +2.145