A large number of applicants for admission to graduate study in business are given an aptitude test. Scores are normally distributed with a mean of 460 and standard deviation of 80. What fraction of applicants would you expect to have scores of 600 or above? A. 0.0401
B. 0.4599
C. 0.5401
D. 0.0852
If arrivals occur at a mean rate of 1.6 events per minute, the exponential probability of waiting less than 1 minute for the next arrival is:
A. .2019.
B. .7104.
C. .8812.
D. .7981.
In any sample space P(A | B) and P(B | A):
A. are always equal to one another.
B. are never equal to one another.
C. are reciprocals of one another.
D. are equal only if P(A) = P(B).