Search 79,948 tutors
FIND TUTORS
Ask a question
0 0

probability

Tutors, please sign in to answer this question.

1 Answer

First find the number of standard deviations:
(7.17-7.2)/.15=-.2
 
Then use excel to find the percentage of a normal distribution -.2 std dev's below average:
=normsdist(-.2)=.4207
 
Hope that helps,
Deanna