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Over the past 40 years, the percentage of homes in the United States with smoke detectors has risen steadily and has plateaued at about 96%
Over the past 40 years, the percentage of homes in the United States with smoke detectors has risen steadily and has plateaued at about 96% as of 2015.+ With this increase in the use of home smoke detectors, what has happened to the death rate from home res? Suppose the following contains 17 years of data on the estimated percentage of homes with smoke detectors and the estimated home re deaths per million of population. Percentage of Home Flre Deaths Home: with per Mllllon Smoke Detectors of Population (a) Do you expect a positive or negative relationship between smoke detector use and deaths from home res? Why or why not? We would expect there would be a relationship between smoke detector use and deaths from home res. As more households have smoke detectors, warning of a re would help the inhabitants of the home escape and lead to deaths from home res. (a) Do you expect a positive or negative relationship between smoke detector use and deaths from home fires? Why or why not? We would expect there would be ---Select--- relationship between smoke detector use and deaths from home fires. As more households have smoke detectors, warning of a fire would help the inhabitants of the home escape and lead to --Select- death es. negative positiveI ~selem I\" more (a) Do you , -r negative relationship between smoke detector use and deaths from home res? Why or why not? fewer We woul- mild be a relationship between smoke detector use and deaths from home res. As more households have smoke detectors, warning of a re would help the inhabitants of the home escape and lead t _ :deaths from home res. (b) Compute and report the correlation coefficient. (Round your answer to four decimal places.) Is there a positive or negative correlation between smoke detector use and deaths from home fires? Comment. There is ( ---Select--- * ) correlation between smoke detecter use and death from home fires. (c) Show a scatter plot of the death rate per million of population and the percentage of homes with smoke detectors. 25 25 25 20 .. . 20 20 15 15 15 per Million Population per Million Population per Million Population Home Fire Deaths Home Fire Deaths Home Fire Deaths 10 10 10 5 0 O 0 0.2 0.4 0.6 0.8 0.2 0.4 0.6 0.8 0 0.2 0.4 0.6 0.8 Percentage of Homes with Percentage of Homes with Percentage of Homes with Smoke Detectors Smoke Detectors Smoke Detectors O 25 20 15 per Million Population Home Fire Deaths 10 O 0.2 0.4 0.6 0.8 1 Percentage of Homes with Smoke Detectors O(b) Compute and report the correlation coefficient. (Round your answer to four decimal places.) Is there a positive or negative correlation between smoke detector use and deaths from home fires? Comment. There v -Select--- correlation between smoke detecter use and death from home fires. i. . a strong positive (c) Show eath rate per million of population and the percentage of homes with smoke detectors. no a strong negative 25 ion
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