20 !! earth’s animals: the iucn red list of threatened species notes that 36% of the 47,677 species assessed are threatened with extinction. how many species are currently threatened? question: 36% of 47,677 species what was your strategy on this problem?

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.