7.
+ -10.27 points
bbunderstat12 6.1.007.
assuming that the heights of college women are normally distributed with mean 68 inches and standard deviation 1.9 inches, answer the following questions. (hint: use the figure below with
mean y and standard deviation o.)
area under a normal curve
2.35%/13.5%
34%
34%
13.5%
2.35%
- 30
-20
o
-
to
4 + 20
u + 30
u
68%
95%
99.79.
(a) what percentage of women are taller than 68 inches?
%
(b) what percentage of women are shorter than 68 inches?
%
(c) what percentage of women are between 66.1 inches and 69.9 inches?
0%
(d) what percentage of women are between 64.2 and 71.8 inches?