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Data are drawn from a bell-shaped distribution with a mean of 140 and a standard deviation...

Data are drawn from a bell-shaped distribution with a mean of 140 and a standard deviation of 2.

a. Approximately what percentage of the observations fall between 134 and 146? (Round your answer to the nearest whole percent.)

Percentage of observations_______%



b. Approximately what percentage of the observations fall between 136 and 144? (Round your answer to the nearest whole percent.)

Percentage of observations_______%



c. Approximately what percentage of the observations are less than 138? (Round your answer to 1 decimal place.)

Percentage of observations_______%

Math   Statistics-And-Probability   
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