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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-> 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.
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
