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A salesperson of industrial chemicals has four customers in Sacramento, whom he might be able to visit on a 2-day trip to this city. He will not visit any of these customers more than once.
a) Using coordinates so that (2,1) for example, represents the event that he will visit two of his customers on the first day and one one the second day, draw a diagram similar to that of figure 3.1 showing the points of the corresponding sample space.
b) List the points of the sample space that constitute the events A, B, and C that he will visit all four of his customers, that he will visit more of his customers on the first day than on the second day, and that he will visit at least three of his customers on the second day.
c) Which of the events, A and B, B and C, or A and C, are mutually exculsive?
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The Graduate Management Admission Council, who administers the test, claims that the mean total score is 529. Suppose a random sample of 8 students took the test, and their scores are given below. 699, 560, 414, 570, 521, 663, 727, 413 Use α = .05..
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A loan application is received during the day. By hand: Find the probability that the amount requested amount is $90,000 or more? Find the probability that the amount requested is between $75,000 and $90,000?
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