Clint wants to keep a young tree from blowing over during a high wind. he decides that he should tie a rope around the tree at a height of 180 cm and then tie the rope 200cm from the base. allowing 30 cm of rope for doing the tying will the 270 cm rope he has be long enoigh to do the job.
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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.