SAT scores are normally distributed with a mean of 500 points and a standard deviation of 100 points. suppose you take the SAT. several weeks later you receive your results which show you reached the 80th percentile for the math portion recalling that SAT scores are always expressed as multiples of 10, how many points did you get on the test
a. 690
b. 600
c .580
d. 85
e. 550