SOLUTION: Scores on a history test are normally distributed with a mean of 120 and a standard deviation of 5. Scores on an economics test are normally distributed with a mean of 168 and

Algebra ->  Probability-and-statistics -> SOLUTION: Scores on a history test are normally distributed with a mean of 120 and a standard deviation of 5. Scores on an economics test are normally distributed with a mean of 168 and       Log On


   

Question 915021: Scores on a history test are normally distributed with a mean of 120 and a standard deviation of 5.
Scores on an economics test are normally distributed with a mean of 168 and a standard deviation of 8.
Quinn scored a 110 on the history test and wants to perform just as well on the economics test.
What score would Quinn need to get on the economics test?
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Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
z+=blue+%28x+-+mu%29%2Fblue%28sigma%29
mean of 120 and a standard deviation of 5
z(history) = 10/5 = 2
............
Econ
mean of 168 and a standard deviation of 8.
2+=blue+%28X+-+168%29%2Fblue%288%29
8(2) + 168 = X = 184, score would Quinn need to get on the economics test