16. (10 points) Suppose that the palse rates of 200 college men are bell-shaped (normally distributed) with a mean of 75 and a standard deviation of 4 . a. Approsimately 99.7% of the men have pulse rates between and b. If we did not know that shas daea was betl shuped accorting to Chebyshev's rule, what percentuge of puibe rates are to be webias it standird devtieions of the mean? (lioumd yout answer to 2 Gecimbilylacasil .