Chapter 20, Problem 20P

A transportation engineering study was conducted to determine the proper design of bike lanes. Data were gathered on bikelane widths and average distance between bikes and passing cars. The data from nine streets are

Distance, m	2.4	1.5	2.4	1.8		1.8	2.9	1.2	3	1.2
Lane width, m	2.9	2.1	2.3	2.1		1.8	2.7	1.5	2.9	1.5

(a) Plot these data.

(b) Fit a straight line to these data with linear regression. Add this line to the plot.

(c) If the minimum safe average distance between bikes and passing cars is considered to be 2 m, determine the corresponding minimum lane width.