9.26. Refer to the data at the text Web site, shown in Table 9.16 in Exercise 9.39, giving county-wide data for several variables in Florida. For those data, use software to analyze y = crime rate and x = percentage living in an urban environment.

(a) Construct a stem-and-leaf plot and a box plot for y. Interpret.

(b) Show that y = 24.5 + 0.56a:. Interpret the y-intcrccpt and slope.

(c) Find the predicted crime rate and the residual for Alachua County. Interpret.

(d) Using the slope, find the difference in predicted crime rates between counties that are 100% urban and counties that are 0% urban.

Interpret.

(e) Report and interpret the correlation and /

2

.