SOLUTION: In a recent year, scores on a standardized test for high school students with a 3.50 to 4.00 grade point average were normally distributed, with a mean of 37.6 and a standard devi
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Question 1139217: In a recent year, scores on a standardized test for high school students with a 3.50 to 4.00 grade point average were normally distributed, with a mean of 37.6 and a standard deviation of 2.4. A student with a 3.50 to 4.00 grade point average who took the standardized test is randomly selected. Determine the probability that the student’s test score is between 34.6 and 40.6.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
z=(x-mean)/sd
low end is (34.6-37.6)/2.4 or -3/2.4 or -1.25
high end is (40.6-37.6)/2.4 or +1.25
that probability is 0.7887
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