# The times it takes 5th graders to complete a mathematics problem are Normally distributed with mean 2 min and standard deviation 0.8 min. What is the probability that a randomly chosen 5th grader will take more than 2.5 minutes to complete the problem?

##### 1 Answer

Apr 8, 2017

0.266

#### Explanation:

X ~ N(2,

P (X > 2.5)

= P

= P

= 1 -

= 1 - 0.734

= 0.266