Pick one of the news stories in the Appendix that describes an observational study and that has one or more journal articles accompanying it on the companion website. Explain what was done in the experiment using the terminology and concepts in this chapter. Discuss the extent to which you agree with the conclusions drawn by the authors of the study and of the news story. Include a discussion of whether a cause- and-effect conclusion can be drawn for any observed relationships and the extent to which the results can be extended to a larger population.
Answer to relevant QuestionsFind a news article about a statistical study. Evaluate it using the seven steps on page 121. If all of the required information is not available in the news article, locate the journal article or other source of the ...Construct an example, and draw a histogram for a measurement that you think would be skewed to the right. The data on hours of sleep discussed in Example 7.5 also included whether each student was male or female. Here are the separate five-number summaries for “hours of sleep” for the two sexes: a. Two males reported ...In each of the following cases, would the mean or the median probably be higher, or would they be about equal? a. Prices of all new cars sold in 1 month in a large city. b. Heights of all 7-year-old children in a large ...Refer to Original Source 20 on the companion website, “Organophosphorus pesticide exposure of urban and suburban preschool children with organic and conventional diets.” In Table 4 on page 381, information is presented ...
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