Try using this website for making calculations that require the normal distribution function.
http://psych.colorado.edu/~mcclella/java/normal/accurateNormal.html
For part a), I get
60.15 inches.
For art (c), I get 68.94 inches
I had to guess the limits and see what the fractions fell within those limits, using the computation tool provided. Some iteration was required.
The height of adult women in the U.S. is normally distributed, with a mean height of 64 inches and a standard deviation of 3 inches. With this in mind, answer the following:
a) The shortest 10% of women are shorter than what height?
b) The middle 75% of all women are between what two heights?
c) The tallest 5% of women are taller than what height?
I'm so confused. Please help.
1 answer