Help with a statistics question please

the mean total cholesterol for a population of men between the ages of 20 and 29 is 180 micrograms per deciliter with a standard deviation of 34.8. a healthy total cholesterol level is less than 200, 200-240 is borderline, and above 240 is dangerous. assume that the distribution is normal to answer the following:

a. for a randomly selected man from this group, what is the
probability that his total cholesterol level is 200 or more?
b. for a randomly selected man from this group, what is the
probability that his total cholesterol level is 240 or more?
c. what is the probability that a randomly selected man has a
borderline cholesterol level?
d. what is the probability that a randomly selected man has a healthy cholesterol level?
e. if 700 randomly selected men are chosen from this group, how many (count, not percentage) would you expect to have a total cholesterol level of 200 or more?
fadalabdul1
Asked May 06, 2016

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