Suppose the mean income of firms in the industry for a year is 35 million dollars with a standard deviation of 7 million dollars. If incomes for the industry are distributed normally, what is the probability that a randomly selected firm will earn more than 20 million dollars? Round your answer to four decimal places.
a) 0.9875
b) 0.0125
c) 0.8413
d) 0.1587