The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is:

0.21

Step-by-step explanation:

We know that if two events A and B are independent , then the probability of A and B is given by :-

Given: The probability that an adult possesses a credit card P(A)= 0 .70

The probability that an adult  does not possess a credit card

By assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is given by :-

Hence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is 0.21.

probability for j is 1/4

while

a is 1/6

step-by-step explanation:

i believe its "c" because all of the other options include a but it could be d because there is a way of financing with cash at certain places but its uncommon.