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Fortune magazine reported the results of a survey on executive training that was conducted by the Association of Executive Search Consultants. The survey showed that 75 percent of 300 polled CEOs believe that companies should have "fast-track training programs" for developing managerial talent.
a. Suppose we wish to use the results of this survey to justify the claim that more than 70 percent of CEOs believe that companies should have fast-track training programs. Assuming that the 300 surveyed CEOs were randomly selected, and assuming, for the sake of argument, that 70 percent of CEOs believe that companies should have fast-track training programs (that is, p = .70), calculate the probability of observing a sample proportion of .75 or more. That is, calculate P( pˆ > .75).
b. Based on the probability you computed in part a, would you conclude that more than 70 percent of CEOs believe that companies should have fast-track training programs? Explain.
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1. for commercial flights in 2009 approximately 90 arrived on time within 15 minutes of scheduled arrival time.
Data Analysis and Statistical Modeling for Business
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