Please Help solve this problem in decription

Question

The time it take Claudia to drive to work is normally distributed with a mean of 46 minutes and a standard deviation of 5 minutes. What percentage of the time will it take her less than 61 minutes to drive to work?

Answer 1

Find the z-score to find the probability of driving under 61 minutes.

 

 

z = (61 - 46) / 5 = 3

 

 

P(z < 3) = 0.9987 from a standard normal distribution table.