Data are drawn from a relatively symmetric and bell-shaped distribution with a mean of 20 and a

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Data are drawn from a relatively symmetric and bell-shaped distribution with a mean of 20 and a standard deviation of 2.

a. What percentage of the observations fall between 18 and 22?

b. What percentage of the observations fall between 16 and 24?

c. What percentage of the observations are less than 16? R-96

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