The probability that roger wins a tennis tournament is 0.75 (event a), and the probability that stephan wins a golf tournament is 0.64 (event b). the probability that both roger and stephan win their respective tournaments is 0.48.
a. events a and b are independent because p(a and b) = p(a) p(b).
b. events a and b are independent because p(a and b) = p(a) + p(b).
c. events a and b are dependent because p(a and b) = p(a) p(b).
d. events a and b are dependent because p(a and b) = p(a) + p(b).
e. events a and b are dependent because p(a and b) p(a) p(b).