A survey was conducted to measure the height of U.S. men.  In the survey, respondents were grouped by age.  In the 20-29 age group, the heights were normally distributed, with a mean of 69.6 inches and a standard deviation of 3.0 inches.  A study participant is randomly selected.

1. Find the probability to three significant figures that his height is less than 66 inches.  {#1}
   
   
2. Find the probability to three significant figures that his height is between 66 and 72 inches.  {#2}
   
   
3. Find the probability to three significant figures that his height is more than 72 inches. {#3}