SOLUTION: The mean and standard deviation of 500 students who took a statistics final were 72 and 8, respectively. The grades have a mound-shape distribution. Based upon this information, th

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Question 1032018: The mean and standard deviation of 500 students who took a statistics final were 72 and 8, respectively. The grades have a mound-shape distribution. Based upon this information, the best estimate of the percentage of students who scored higher than 80 on the exam is


A 68%
B 32%
C 16%
D 5%
E 2.5%
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
This is the probability that the group is >=1 SD above the mean. That is closest to C, 16%.