1) Assume that adults have IQ scores that are normally distributed with a mean of 105 and a standard deviation of 15. Find P15, which is the IQ score separating the bottom 15% frm the top 85?
The IQ scoare that separates the bottom 15% from the top 85% is P15 = ______
2) Assume that women's heights are distributed with a mean given by 62.4 and standard deviation by 2.6 inches
a) if one woman is randomly selected, find the probability that her height is less than 63 inches
b) if 44 women are randomly selected, find the probability that they have a mean height less than 63 inches.