Based on past experience, a telemarketing firm has found that calls to prospective customers take an average of 2.0 minutes, with a standard deviation of 1.5 minutes. The distribution is positively skewed, since persons who actually become customers require more of the caller’s time than those who are not home, who simply hang up, or who say they’re not interested. Albert has been given a quota of 220 calls for tomorrow, and he works an 8-hour day. Assuming that his list represents a simple random sample of those persons who could be called, what is the probability that Albert will meet or exceed his quota?
Answer to relevant QuestionsWhen a production machine is properly calibrated, it requires an average of 25 seconds per unit produced, with a standard deviation of 3 seconds. For a simple random sample of n = 36 units, the sample mean is found to be ...As a project for their high school mathematics class, four class members purchase packages of a leading breakfast cereal for subsequent weighing and comparison with the 12-ounce label weight. The students are surprised when ...The operator of a museum exhibit has found that 30% of the visitors donate the dollar that has been requested to help defray costs, with the others leaving without paying. Three visitors are on their way into the exhibit. ...In Exercise 9.101, suppose the tool manufacturer has carried out the study, using the sample size determined in that exercise, and 39.0% of the machinery rebuilding and repairing companies are interested in the new tool ...According to the Internal Revenue Service, the average deduction for charitable contributions in the most recent tax year reported was $4388. Curious to see how his legislative district compares, a state senator surveys a ...
Post your question