The pedestrian and bicyclist fatality rates in 10 randomly selected large cities are shown in Table 68.

Let p be a city€™s pedestrian fatality rate (in number of deaths per 10,000 walking commuters), and let b be the city€™s bicyclist fatality rate (in number of deaths per 10,000 bicycling com- muters).
a. Construct a scatterplot by hand. Assume the pedestrian fatality rate is the explanatory variable.
b. Describe the four characteristics of the association. Compute and interpret r as part of your analysis.
c. Draw a linear model on your scatterplot.
d. Use the model to predict the bicyclist fatality rate of Oklahoma City, which has a pedestrian fatality rate of 20 deaths per 10,000 walking commuters. e. Describe at least one lurking variable.

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Table 68 Pedestrian and Bicyclist Fatality Rates Pedestrian Fatality Bcyclist Fatality Rate (number of deaths Rate (number of per 10,000 walking commuters deaths per 10,000 City bicycling commuters) Baltimore Chariotte Dallas El Paso Jacksonville Las Vegas New Orlcans Portland Raleigh 18 18 25 42 17 10 17 17