Question

Last one!
A researcher determined that the heights of male students in a particular town are normally distributed with a mean of 65 inches and a standard deviation of 1.7. Use the graph above to answer the following questions:
What percentage of these students is taller than 66.7 inches?
If the data are based on 300 students, how many students are between 61.6 and 68.4 inches tall? Explain.

Answer 1

@jim_thompson5910 @Hero @Directrix

Answer 2

for the first part is this right? 13.5%+2.35%=15.85% or 16% taller than 66.7 in

Answer 3

@satellite73

Answer 4

@kropot72 I found someone else answering this question, is his answer right, could I just use that? (might save you some work) http://openstudy.com/study#/updates/5159a2c6e4b0507ceba25b8b

Answer 5

Approximately 15.85% of students are taller than 66.7 inches.

Answer 6

And then is 285 students are between 61.6 and 68.4 correct?

Answer 7

If you sum the area under the curve between 61.6 and 68.4 inches it is 95% of the total area. 95% of 300 is 285 students.

Answer 8

Sweet, thanks!

Answer 9

You're welcome :)