Suppose the heights of the members of a population follow a normal distribution. If the mean height of the population is 68 inches and the standard deviation is 4 inches 95% of the population will have a height within which of the following ranges?

A. 52 to 84 inches
B. 64 to 72 inches
C. 56 to 80 inches
D. 60 to 76 inches

Question

Suppose the heights of the members of a population follow a normal distribution. If the mean height of the population is 68 inches and the standard deviation is 4 inches 95% of the population will have a height within which of the following ranges? 

A. 52 to 84 inches
B. 64 to 72 inches
C. 56 to 80 inches
D. 60 to 76 inches

perl · Answer

you can use the empirical rule here

perl · Answer

it says within 2 st. deviations of the mean of a normal distribution, there is 95% of the data http://www.oxfordmathcenter.com/images/notes/290-00.gif

hockeychick23 · Answer

ok so it would be 60 to 76 because its - 4(2) and +4(2) ?

perl · Answer

(can't give the answer)

hockeychick23 · Answer

ok sorry