Suppose men's heights were normally distributed with mean 180cm. And standard deviation 20cm. Using the approximate empirical rule about what percentage of heights would be between 160 and 200cm.? Suppose peoples systolic blood pressure were normally distributed with mean 130 mmhg and standard deviation 5mmhg. Using the approximate empirical rule about what percentage of heights would be between 120 and 140 mmhg? Suppose baseball batting averages were normally distributed with mean 250 and standard deviation 15. Using the approximate empirical rule about what percentage of players would have averages above 235