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Data are drawn from a bell-shaped distribution with a mean of 30 and a standard deviation...

Data are drawn from a bell-shaped distribution with a mean of 30 and a standard deviation of 3.

a. Approximately what percentage of the observations fall between 27 and 33? (Round your answer to the nearest whole percent.)



b. Approximately what percentage of the observations fall between 24 and 36? (Round your answer to the nearest whole percent.)



c. Approximately what percentage of the observations are less than 24? (Round your answer to 1 decimal place.)

Math   Statistics-And-Probability   
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