timkiabauer timkiabauer

10-11-2022
Mathematics

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Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities.
a. The percentage of scores less than 100 is 50 %
(Round to one decimal place as needed.)
b. The percentage of scores greater than 120 is 16 %.
(Round to one decimal place as needed.)
c. The percentage of scores between 60 and 120is%.
(Round to one decimal place as needEd)

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