Question 1183718
I will do only part (c).  (You should be able to do part (b) from the way I wrote the probabilities below.)


P(with shopping cart ∩ card)  = 0.56
P(with shopping cart ∩ cash)  = 0.16
P(with shopping cart ∩ check) = 0.08


P(without shopping cart ∩ card)  = 0.10
P(without shopping cart ∩ cash)  = 0.08
P(without shopping cart ∩ check) = 0.02