In a recent year, the total scores for a certain standardized test were normally distributed, with a mean of 500 and a standard deviation of 10.2. Answer parts (a)–(d) below
(a) Find the probability that a randomly selected medical student who took the test had a total score that was less than 489.
The probability that a randomly selected medical student who took the test had a total score that was less than 489 is
(Round to four decimal places as needed)