SOLUTION: Assume that a set of test scores is normally distributed with a mean of 120 and a standard deviation of 5. Use the 68-95-99.7 rule to find the following quantities.
a. The percent
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Question 1003711: Assume that a set of test scores is normally distributed with a mean of 120 and a standard deviation of 5. Use the 68-95-99.7 rule to find the following quantities.
a. The percentage of scores less than 120 is ____%.
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
The mean is 120 and it's normally distributed, right? Which means that the distribution is symmetric about 120.
Percentage of scores less than 120 is 50%
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