The data given in the previous exercise on x 5 call-to-shock time (in minutes) and y = survival rate (percent) were used to compute the equation of the leastsquares line, which was y^ = 101.33 2 9.30x The newspaper article “FDA OKs Use of Home Defibrillators” (San Luis Obispo Tribune, November 13, 2002) reported that “every minute spent waiting for paramedics to arrive with a defibrillator lowers the chance of survival by 10 percent.” Is this statement consistent with the given least-squares line? Explain.
Answer to relevant QuestionsAn article on the cost of housing in California that appeared in the San Luis Obispo Tribune (March 30, 2001) included the following statement: “In Northern California, people from the San Francisco Bay area pushed into ...Explain why the slope b of the least-squares line always has the same sign (positive or negative) as does the sample correlation coefficient. The relationship between x = total number of salmon in a creek and y = percentage of salmon killed by bears that were transported away from the stream prior to the bear eating the salmon was examined in the paper ...The article referenced in the previous exercise also gave data on the percentage of operating costs covered by park revenues for the 2007–2008 fiscal year. a. Find the equation of the least-squares line relating y = ...The accompanying data are x = cost (cents per serving) and y = fiber content (grams per serving) for 18 high-fiber cereals rated by Consumer Reports (www .consumerreports.org/health). a. Compute and interpret the ...
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