For Exercises 37–51, do the following for the indicated data sets from the Section 4.1 exercises:

  1. Calculate the slope and the intercept of the regression line.
  2. State the regression equation in words.
  3. Interpret the value for the slope of the regression line, in terms of the variables from the particular exercise.
  4. Interpret the value for the intercept of the regression line, in terms of the variables from the particular exercise.

Question 4.144

walkbike

46. Walking or Biking to Work. The table contains, for a sample of 10 American cities, the percentage of people who walk to work and the percentage of people who bike to work .

City
Anaheim 1.8 0.9
Baltimore 6.5 0.8
Buffalo 6.2 0.9
Cincinnati 5.4 0.5
Detroit 3.1 0.3
Jacksonville 1.4 0.4
Las Vegas 1.9 0.4
New Orleans 5.1 2.1
Orlando 1.9 0.4
Sacramento 3.2 2.5
Table 4.59: Source: U.S. Census Bureau.