Home Work 4 : 1 . A Harris Interactive survey for InterContinental Hotels & Resorts asked respondents, “We traveling internationally, do you generally venture out on your own to experience culture, or stick with your tour group and itineraries?” The survey found that 23% of the respondents stick with their tour group ( USA Today, January 21, 2004). a. In a sample of six international travelers, what is the probability that two will stick with their tour group? b. In a sample of six international travelers, what is the probability that at least two will stick with their tour group? c. In a sample of 10 international travelers, what is the probability that none will stick with the tour group? 2 . When a new machine is functioning properly, only 3% of the items produced are defective. Assume that we will randomly select two parts produced on the machine and that we are interested in the number of defective parts found.
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This note was uploaded on 02/06/2012 for the course ECON 103 taught by Professor Gispy during the Spring '11 term at Prairie State College .