# GMAT Scores

Please use excel when necessary:

1)The GMAT scores of MBA candidates are normally distributed with a mean of 568 and Standard eviation of 25.6 What is the probabilitie of candidates scoring higher than 600 ?

2) A financial Manager is interested to study DM students. A random sample of 256 students salaries totaled $ 9,067,520 The sample standard deviation is $ 3,200

a) What is the point estimate of the students mean salary?

b) What is the point estimate of the standard deviation of the students salaries?

c)Construct a 95% confidence interval for the mean salary of the DM students?

https://brainmass.com/statistics/confidence-interval/gmat-scores-coordinated-20946

#### Solution Preview

1) P(x<600) : Z score = (X - Mean)/Std Dev

= (600 - 568)/25.6 = 1.25

P(X>600) = 1 - P(X<600)

From Normal Tables , we see that ...

#### Solution Summary

The GMAT scores of MBA candidates are normally distributed with a mean of 568 and Standard Deviation of 25.6 is analyzed. What is the probability of candidates scoring higher than 600 is computed.