If you buy a school raffle ticket for $1, your overall probability of winning at least one of the prizes is 0.03. you can improve your odds of winning something by buying two tickets. what is the probability that one or the other of your tickets will win something? (round your answer to the nearest ten-thousandth) a. 0.0591 b. 0.0018 c. 0.6200 d. 0.0396 e. 0.0726

either a) :

p (a ticket does not win a prize) = 1 - 0.02 = 0.98 ;

so p (neither of two tickets wins a prize = 0.9^2 = 0.9604 .

hence probability if winning a prize with two tickets is

1 - 0.9604 = 0.0396 -option e

or b) :

wi : ticket i wins a prize

tree diagram:

w1 p = 0.02 w2 p = 0.02 \

. . . . . . . . w2' p = 0.98 / p = 0.02

. . . w1' p = 0.98 w2 p = 0.02 p = 0.0196

. . . . . . . . w2' p = 0.98 no prize

p (a prize) = (sum of first three rows -- first two need not be split! )

= 0.0396 , as before

so the answer is d

hope that !

7

step-by-step explanation:

is means division by fractions

step-by-step explanation: