Question

The heights of female students at a northeastern college are approximately normally distributed with mean 64.5 inches and standard deviation 1.8 inches. According to the normal distribution, what is the approximate percentage of female students with heights between 62 and 63 inches? Round your answer to the nearest integer.

Answer 1

You have X distributed N(64.5, (1.8)^2). You want to work out P(62<X<63) = P(X<63) - P(X<62).

Answer 2

i dont know that that means

Answer 3

The normal distribution looks a bit like this. The shaded bit is what you want and the line up the middle is the mean. You need to work out what proportion of people lie in the shaded area. For the normal distribution we can calculate the proportion less than a number easily using tables or computer programs, so we write what we want to know in terms of proportions less than some number.