Use R to solve this question. Scores made on a certain aptitude test by nursing students are approximately normally distributed with a mean of 500 and a variance of 10000.
(a) What proportion of those taking the test score below 200?
(b) A person is about to take the test. What is the probability that he or she will make a score of 650 or more?
(c) What proportion of scores fall between 350 and 675?
(d) Twenty percent of all nursing students obtained less than how many scores on this test?