Answer (Choose 1 answer)
Two samples each of size 25 are taken from independent populations assumed to be normally distributed with equal variances. The first sample has a mean of 35.5 and standard deviation of 3.0 while the second sample has a mean of 33.0 and standard deviation of 4.0.There are degrees of freedom for this test.
A. 50
B. 48
C. 51
D. 49
