SOLUTION: The senior class has been given a comprehensive examination to asses educational experience. The mean on the test was 75 and the standard deviation was 11. What percentage of the s
Algebra ->
Probability-and-statistics
-> SOLUTION: The senior class has been given a comprehensive examination to asses educational experience. The mean on the test was 75 and the standard deviation was 11. What percentage of the s
Log On
Question 571950: The senior class has been given a comprehensive examination to asses educational experience. The mean on the test was 75 and the standard deviation was 11. What percentage of the students had scores above 80? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! The senior class has been given a comprehensive examination to asses educational experience. The mean on the test was 75 and the standard deviation was 11. What percentage of the students had scores above 80?
-----
z(80) =(80-75)/11 = 0.4545
---
P(x > 80) = P(z > 0.4545) = normalcdf(0.4545,100) = 0.3247
=================
cheers,
Stan H.
=================
(