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*Make sure to use the shortcut formula for 14.1! 14.1. In the late 1930s and early 19403, an important sociology experiment took place in the Boston area. At that time, 650 boys (median age = 10 112 years) participated in the CambridgeSomerville Youth Study (named for the two economically depressed communities where the boys lived). The participants were randomly assigned to either a delinquency prevention program or a control group. Boys in the delinquency prevention program had a counselor and experienced several years of opportunities for enrichment. At the end of the study, police records were examined for evidence of delinquency among all 650 boys. Analyze the data in the table and write a conclusion. Received program Control Police record 114 101 No police record 211 224 4.15. You may recall om Chapter 9 that I bought Doritos tortilla chips and Snickers candy bars to have data for problems. For this chapter, I bought regular M&Ms- In at 1159-02. package I got 9 blues, 11 oranges, 17 greens, 8 yellows, 5 browns, and 7 reds. At the time I bought the package, Mars, Inc., the manufacturer. claimed that the population breakdown is 24% blue, 20% orange, 16% green, 13.3% yellow, 13.3% brown, and 13.3% red (www.mms.comfuslaboutfproductslmilkchocolate). Use a chi square test to evaluate Mars's claim. *14.11. Remember the controversy described in Chapter 1 over the authorship of 12 of The Federalist papers? The question was whether they were written by Alexander Hamilton or James Madison. Mosteller and Wallace (1939) selected 48 lOOO-word passages known to have been written by Hamilton and 50 IOOOword passages known to have been written by Madison. In each passage, they counted the frequency of certain words. The results for the word by are shown in the table. 15 by used with signicantly different frequency by the two writers? Explain how these results help in deciding about the 12 disputed papers. Rate per 100 words Hamlton Madison 0-6 21 5 7-1 2 27 31 13-13 0 14