Score on Test 3 for statistics score are normally distributed with mean 70 and standard deviation 1.5.
a) What is the probability that a student selected at random has a score below 72 on this test?
b) What is the probability that a student selected at random has score above 60 on this test?
c) What is the probability that a student selected at random has a score between 55 and 67 on this test?
d) What scores separates the highest 10% of the observations of the distributions?
e) Find 'a' such that P(x > a) = 0.7