Suppose a population is known to be normally distributed with a mean, μ, equal to 144 and a standard deviation, σ, equal to 27. Approximately what percent of the population would be between 117 and...

Suppose a population is known to be normally distributed with a mean, μ, equal to 144 and a standard deviation, σ, equal to 27. Approximately what percent of the population would be between 117 and 171?

1. 13.5%

2. 47.5%

3. 68%

4. 81.5%

5. 34%

6. 95%