In Exercise 1.25, of 3887 sampled subjects, 63.8% said that at least once they felt as though they were in touch with someone when they were far away. That is, of 3887 sampled subjects who had an opinion, 1407 said never and 2480 said at least once. Suppose that only 20% of the entire population would report at least one such experience. If the sample of 3887 people were a random sample, would this sample proportion result of 0.638 be surprising? Investigate, using the applet described in Activity 2. Do this by simulating samples from the population with a proportion of 0.20. Use the sample size of 4000 as an approximation to the actual sample size of 3887.
Answer to relevant QuestionsUsing the statistical software that your instructor has assigned for the course, find out how to enter a data file. Create a data file using the data in Figure 1.2. The Environmental Protection Agency (EPA) uses a few new automobiles of each model every year to collect data on pollution emissions and gasoline mileage performance. For the Honda Accord model, identify what’s meant by ...During the 2010 Professional Golfers Association (PGA) season, 90 golfers earned at least $1 million in tournament prize money. Of those, 5 earned at least $4 million, 11 earned between $3 million and $4 million, 21 earned ...The Heights data file on the text CD has heights for female and male students (in inches). For males, the mean is 70.9 and the standard deviation is 2.9. For females, the mean is 65.3 and the standard deviation is 3.0. a. ...The distribution of high school graduation rates in the United States in 2004 had a minimum value of 78.3 (Texas), first quartile of 83.6, median of 87.2, third quartile of 88.8, and maximum value of 92.3 (Minnesota) ...
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