A statistical survey found that 20% of cars are red, and 10% are electric cars. It was further discovered that of all cars that are either red or electric, 50% are both red and electric. a) What is the probability P[R ∩ E] that a car is both red and electric? b) What is the conditional probability P[E|R] that a red car is electric? c) What is the conditional probability P[R|E] that an electric car is red?

is there answer choices?

a.) list the factors of 40.

1/2/4/5/8/10/20/40

b.) list the factors of 40 that represent the number of cans that could be on each shelf.

5

c.) how many different arrangements of cans are possible?

just one because if you put more on one shelf you will go way over 40 and the cabinet will probably break.

d.) what are the possible arrangements of the cans?

put 5 cans on each self to reach 40 cans in total.

e.) which arrangement uses all the shelves?

5 because you can put 5 cans on each shelf, and since there are 8 shelfs you are equally going to get 40 cans.