The percentages of American adults who are confident they will retire ahead of their schedule are described by the scatterplot and the model in Fig. 125 for various incomes (in thousands of dollars).

a. Is the association positive, negative, or neither? What does that mean in this situation?
b. Estimate the slope of the model. What does it mean in this situation?
c. Estimate the difference in the percentages of American adults who are confident they will retire ahead of their schedule for those that earn a certain income and for those that earn $50 thousand more than that income.

Transcribed Image Text:

Income versus Retiring Ahead of Schedule 28 26 24 E 22 20 18 16 14 12 ЗО 40 50 60 70 80 90 100 110 120 130 Thousands of dollars