3. The day they go on sale, Beth forgets her money to buy season tickets to the high school basketball games. Randall has extra cash in his wallet and pays for her ticket. How is P2P useful for Beth in this scenario?

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.