Assume that a set of test scores is normally distributed with a mean o

Assume that a set of test scores is normally distributed with a mean
of 100 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 100 is ____%
b. The percentage of scores greater than 105 is ____%
c. The percentage of scores between 90 and 105 is ____%

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