college statistics
posted by melba .
assume the population of heights of female college students mean of 64.37 inches standard deviation of 6,26 in and random sample of 74 find p(x>65.25)B. find p(x>65.25)c. why is formulas required to solve a different than c.

Is x the individual score or the mean?
If it is the score,
Z = (scoremean)/SD
If it is the mean,
Z = (scoremean)/SEm
SEm = SD/√n
The first is a distribution of scores and the second deals with the distribution of means.