Scores on a particular test are normally distributed with a mean ...

[rlane42]

Scores on a particular test are normally distributed with a mean of 126 points. Find the standard deviation if for these scores, P90 = 160.0.

Question 2

The random variable x has a normal distribution with mean of 75.0 and standard deviation of 2.5 . Waiting times to see a doctor at a large clinic are normally distributed with a mean of 68.2 minutes and a standard deviation of 14.8 minutes. Find the probability that the waiting time to see a doctor is less than 45.0 minutes.

[jharrington11]

Answer to Question 1

26.6

Answer to Question 2

0.0582

[rlane42]

Thanks

[jharrington11]

Welcome