for the first image plz explain how u got #4 TY

\f{'1 point} Rework problem 22 from section 3.4 of your text. involving defective replacement printer cartridges. Assume that the store stocl-cs 20 percent brand A, 40 percent brand E5, and the rest are brand X. Assume further that 15 percent of brand A, 20 percent of brand El, and 30 percent of brand )4 will not provide the number of pages advertised. Acustomer buys a cartridge at random. If the customer returns the cartridge because it does not provide the number of pages advertised, what is the probability.r that the cartridge was brand X? E {1 point} Rework: problem 25 from section 3.4 of your text. involving pine tree seeds. Assume that so percent are of type A, 40 percent of type E5, and 30 percent of type C. It is known that 35 percent of seeds of type A, 45 percent of type B. and ?5 percent of type C have germinated. A seed is selected at random. it the seed has germinated, what is the probability that it is of type A? {1 point} Rework problem 28 from section 3.4 of your text. involving the drawing oftwo balls ii'orn a box of colored balls. Assume the box contains 11 balls: 3 red, 4 blue, and 4 yellow. A ball is drawn and its color noted. If the ball is yellow, it is replaced; otherwise, it is not. A second ball is then drawn and its color is noted. What is the probability that the rst ball was yellow, given that the second was red? (1 point) Rework problem 31 from section 3.4 of your text, involving the selection of a flight between New York and Los Angeles. Assum that there are three airlines from which to choose, each with a number of flights per day, and an on-time percentage shown below. (Assume that delays occur randomly.) A traveler selects a flight at random, and it arrives on time. Airline Num.-of Flights On-Time Perc. Best Air 5 80 Air One 8 50 International Air 7 90 (1) What is the probability that the traveler flew on Best Air? 4/14 (2) What is the probability that the traveler flew on Air One? (3) What is the probability that the traveler flew on International Air?\f\f(1 point} Rework problem i' from section 3.4 of 1,rour text, involving the selection of a colored ball from one of three bowls. Assume that you randome pick one of the bowls: X, Y, or Z. You then randome draw one ball out of the selected bowl and note its oolor. The bowls contain the following oolored balls: Bowl X: 3 red, 1 white, and 1 blue. Bowl Y: 3 red, 1 white, and 4 blue. Bowl Z: 1 red, 3 white, and 3 blue. (1) If the ball is blue, what is the probability that it was drawn from bowl X? 555 (2) If the ball is either blue or white, what is the probability,r that it was drawn from bowl Y? (1 point} Rework problem 9 from section 3.4 of 1,rour text, involving the selection of colored balls from a box. Assume that the box contains 11 balls: 5 red, 4 green, and 2 blue. Two balls are brawn at random, one atterthe other without replacement. What is the probability that the rst ball was blue, given that the second was red? ::: {1 point} This problem involves the career plans of students in a biology class. Assume that the class consists of 35 percent freshmen, 20 percent sophomores, 25 percentjUhiors, and 20 percent seniors. Assume further that 40 peroeht of the freshmen, 3O peroeht of the sophomores, 25 percent of thejuniors, and 20 percent of the seniors plan to go to medical school. One student is selected at random from the class. {1) What is the probability that the student plans to go to medical school? ::: {2) If the student plans to go to medical school, what is the probability that she is ajunior? EEE {1 point} Rework problem 16 from section 3.4 of your text, involving university students' math backgrounds. Assume that 55 percent of the students at the university have taken 4 years of high school math. Of those with four years of high school math, 3t) percent plan to major in science. Of those without 4 years, only 20 percent plan to major in science. You stop a student at random. If the student plans ID major in SEiEHCB, what is the probability that \"\"5 student had TDIJI' years Of high school math? (1 point} Rework problem 19 from section 3.4 of your text, involving the rental cars with navigation systems. Assume that the car lot contains 30 percent BMWs. 35 percent Corvettes, and 35 percent Volvcs. Of the BMWs, 20 percent have navigation systems, 10 percent of the Corvettes have navigation systems, and 80 percent of the Volvos have navigation systems. You are assigned a car at random. If the car has a navigation system, what is the probability that it is not a BMW