Posted by Tom on Wednesday, May 4, 2011 at 6:17pm.
Male: 60,63,65,70,66,80,85,73,79,80,83,85,81,76, 77,90,91,88,78,92
Females:
62,69,70,72,78,77,79,83,80,88,90,90,98,100, 66,67,65,63,69, 83
Can you hellp me I need to find:
A) P value and the Z value of this data with a Alpha Value of 0.05.

MATH Please help me  PsyDAG, Thursday, May 5, 2011 at 11:17am
Find the mean first = sum of scores/number of scores
Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance.
Standard deviation = square root of variance
For twotailed test, P = .05 for Z = 1.645.
I'll let you do the calculations.