15). Through a survey, it has been determined that 10%% of daily purchases in a certain supermarket are made by women. daily purchases in a certain supermarket are made by women, Of this group, 70%% buy some product on sale, while of the men's group, only 1095 buy products on sale. of men, only 10% buy products on promotion. al Determine the probability that the store sells some promotional product every day. promotional products daily. by if a sale is selected at random and contains no promotional products, what is the probability that the purchase was made by a woman? What is the probability that the purchase was made by a man? 16) A certain savings cooperative has observed that the probability of a loan being paid off is 70% a loan is 70%% if the lender is a woman. female. The ratio of male to female savers is 1, Determine the probability that a saver will repay a loan and is of female gender, 17) A certain contest consists of randomly obtaining a number divisible by 10 from all the integers. for 10 of all the Integers from | to 40, If the number obtained is divisible by 10, the participant receives the keychain A; otherwise, she receives the keychain B. If the number obtained is divisible by 10, the participant receives key ring A; otherwise, he receives key ring B. Then, a key Is chosen. key is then chosen. Key ring A contains ] keys of a vehicle and 7 keys that do not correspond to the vehicle. Key ring 1 has 2 vehicle keys and 10 keys that are not vehicle keys. are not Find: [a) The probability that the key removed is from the vehicle, b) the probability that the key extracted is from the vehicle and belongs to key ring B. to key ring B c) What would you recommend if event A is a situation that favors your sales