Solve the following:
Your firm is planning a new style of advertising and figures that the probability of increasing the number of customers is 0.63, while the probability of increasing sales given an increase in the number of customers is 0.651. Also assume that when there is no increase in the number of customers, there is no way that you'll be able to increase the sales.
a) draw a probability tree from this situation.
b) find the probability of increasing both sales and customers.
c) if sales increase, what is the probability that the number of customers increases?
d) if sales do not increase, what is the probability that the number of customers increases?
e) find the probability that neither customers not sales increase.