SOLUTION: The probability that a student has a Visa card (event V) is .65. The probability that a student has a MasterCard (event M) is .20. The probability that a student has both cards is

Algebra ->  Probability-and-statistics -> SOLUTION: The probability that a student has a Visa card (event V) is .65. The probability that a student has a MasterCard (event M) is .20. The probability that a student has both cards is       Log On


   



Question 1151915: The probability that a student has a Visa card (event V) is .65. The probability that a student has a MasterCard (event M) is .20. The probability that a student has both cards is .13.

(a) Find the probability that a student has either a Visa card or a MasterCard

Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
given probability that a student has:
a Visa card (event V) is .65
a MasterCard (event M) is .20
a student has both cards is .13
(a) Find the probability that a student has either a Visa card or a MasterCard
The key word here is OR.
P(V or M) =+P%28V%29%2BP%28M%29-P(V+and+M)
P(V or M) = 0.65+%2B+0.20+-+0.13+=+0.72