If sodium intake in a certain population of men are normally distributed with a mean of 2490 mg

If sodium intake  in a certain population of men are normally distributed with a mean of 2490 mg  and a standard deviation of 745 mg.

1. Find the probability that an individual picked at random from this population will have a sodium intake between 2721 mg and 4204 mg.
2. What proportion of the sodium intakes are greater than 1988 mg.
3. Find the probability that an individual picked at random from this population will have a sodium intake less than 3637.
4. What proportion of the sodium intakes are between 1074 and 3796.
5. Find the 95^th percentile of sodium intake.
6. Find the 10^th percentile of sodium intake
7. Find the 14^th percentile of sodium intake.
8. Find the 80^th percentile of cholesterol measures.