The numbers 1 through 40 are placed in a hat to determine the order in which students will give an oral report. Event A is being one of the first 10 student to give their report. Event B is picking a multiple of 6 If you pick first calculate P(A u B)

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.