A survey was conducted in which the customer service representatives of two companies were rated on a scale of 1 to 6. The graph below shows customer service ratings of 20 representatives. Graph A- 4 2 3 3 4 4 Graph B- 4 2 6 2 3 3 The interquartile range for each company is 3. The difference between the median rating for each company is approximately how many times the interquartile range? A. 0.3 B. 4 C. 3 D. 2.5

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.