What is the direction of this resultant vector f~ ? use counterclockwise as the positive angular direction, between the limits of −180◦ and +180◦ from the positive x axis. answer in units of ◦ . your answer must be within ± 5.0%

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.