SOLUTION: Suppose the scores in the mathematics exam are normally distributed. If the exam bhas a mean score of 25, and a standard deviation of 5,what is the probability that if you take the
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Question 1178759: Suppose the scores in the mathematics exam are normally distributed. If the exam bhas a mean score of 25, and a standard deviation of 5,what is the probability that if you take the exam you will get a score higher than 30 points? Answer by ewatrrr(24785) (Show Source):
Hi
normally distributed: µ = 25 and σ = 5
Using a TI 0r similarly an inexpensive calculator like Casio fx-115 ES plus:
P(x> 30) = 1 - P(x ≤ 30) = 1 - normalcdf(-9999,30,25,5) = 1- .8413 = .1587
Wish You the Best in your Studies.
