What is the probability of 62 if the mean is 60 and the standard deviation 7
what is the proportion between 45 and78 if the mean is 60 and the standard deviation 7
what is the z score of 78
what is the z score of 45
Z = (score-mean)/SD = (62-60)/7 = ?
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to your Z scores.