The scatter plot shows the maximum noise level when different numbers of people are in a stadium. The linear model is given by the equation y=1.5x+22.7 y = 1.5 x + 22.7 , where y y represents maximum noise level and x x represents the number of people, in thousands, in the stadium. a sports announcer states that there are 65,000 fans in the stadium . estimate the maxumum noise level . is this estimate resonable ?

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.