Question

Renee is studying the effect of positive reinforcement for her psychology class. She gets 8 pigeons. Renee measures the pigeon for correct responses on a behavioral task before implementing a training schedule of positive reinforcement. After training the pigeons, she measures the number of correct responses on the same behavioral task. Using a two-tailed test and use the data below to determine whether or not there is a difference before and after the positive reinforcement training schedule BEFORE REINFORCEMENT AFTER REINFORCEMENT

6 4   

8 6

5 4

7 6

4 3

7 5

6 5

8 4

1 what is the null hypothesis

2 what is the alternate hypothesis ?

3 what is the critical value for this test?

4 conduct the appropriate t-test. what is the t-optained value

5 what is your conclusion regarding the null hypothesis?

6 interpret the test results. what do the results mean?

Answer 1

Computational table:

1)

Null Hypothesis:

2) Alternative Hypothesis:

3)

Degrees of Freedom = n-1 = 8-1 = 7

Critical value:

                 …………..Using t table

4)

Test statistic:

5)

Conclusion:

t > Critical value, i.e 4.78 > 2.3646, That is Reject Ho at 5% level of significance.

6)

Therefore, there is a difference before and after the positive reinforcement training schedule.