posted by Erik .
Suppose that heights of newborns are bell shaped with a mean of 6.8 pounds and a standard deviation of 1.3 pounds. What percentage of weights are:
a) Below 6.8 lbs.?
b) Above 8.3 lbs.?
a) In a normal distribution, the mean = median = mode. What percentage are below the median?
Z = (score-mean(/SD
Calculate the Z score for b.
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to your Z score.