SOLUTION: I need help with this question. The scores for math test #3 were normally distributed. If 15 students had a mean score of 74.8% and a standard deviation of 7.57, how many students

Question 970103: I need help with this question. The scores for math test #3 were normally distributed. If 15 students had a mean score of 74.8% and a standard deviation of 7.57, how many students scored above an 85%?

Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Find the z score.

Find the probability associated with that z score.

So scores above 85% would have a probability of
Out of the 15 students,
student would have that score.
One student
RELATED QUESTIONS
IQ test scores are normally distributed with a mean of 100 and a standard deviation of 15 (answered by nerdybill)

Hello, I need help solving the following problem (please show the steps): In 2005,... (answered by Theo)

Hello, having some major issues with this question please advise. Thank you The scores (answered by Vladdroid)

I need help with the following question please. A sociologist develops a test to... (answered by stanbon)

Please help me solve this problem. The combined math and verbal scores for students... (answered by ewatrrr,Theo)

I have two questions that I am in dire need of answers to. I have been stumped for 3... (answered by scott8148)

Could someone please assist me with the following question. I am having problems with... (answered by stanbon)

Hello, having issues with this question. Please advise The scores on a national test... (answered by lynnlo)

The SAT scores for MATH are normally distributed with a mean of 480 and a standard... (answered by jpg7n16)