PLEASE HELP, DUE SOON!! A total of 650 t-shirts (medium and large sizes) were sold for the school fundraiser. The prices for the t-shirts were $6 for a medium and $8 for a large. A total of $4600 was collected from these sales.

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.