Question: Data are drawn from a bell-shaped distribution with a mean of 20 and a standard deviation of 2. a. What percentage of the observations fall

Data are drawn from a bell-shaped 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?

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a The interval 18 22 is the interval According to the empirical rule 68 of the observations fa... View full answer

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