Question 6.51

16. A study at the University of Massachusetts, Amherst, published in the May 2007 Journal of Marriage and Family found that married women do about one fewer hour of housework a week for every $7500 they earn as full-time workers outside the home, regardless of their husband’s income.

  1. What would be the numerical value of the slope coefficient in the regression model that predicts women’s housework hours from their income? What does the sign of the slope (positive or negative) tell us about the relationship between these variables?
  2. Suppose Lynette’s salary is $30,000 greater than Gabrielle’s. What would you predict to be the difference in hours of housework they each do?