Question

1. A psychologist was interested in the effect of Vitamin A deficiency on maze learning rats. A group of nine rats learned a simple maze. Next, these same rats were deprived of Vitamin A for six weeks and were then tested again on their ability to learn a second maze equal in difficulty to the first. The scores represent the number of maze errors made under the two treatment conditions. Perform an appropriate two-tailed test of the significance of the mean difference.

Answer 1

Answer: hello your question has some missing information attached below is the missing information

• we fail to reject H0 hence μ1 = μ2
• mean difference ( d ) = -2.444

Explanation:

H0 : μ1 = μ2

Ha : μ1 ≠ μ2

where : μ1 = mean number of errors made in pretest

μ2 = mean number of errors made in post test

n = 9

attached below is the detailed solution