The study described in the preceding exercise also looked at 11,794 first-born daughters at the time they gave birth to their first child. A least squares regression was used to examine the relationship between income Y and the daughter’s age A (in years) at the time she gave birth:

The t values are in brackets. Is the estimated relationship between age and income

a. Statistically significant at the 5 percent level?

b. Substantial?

Transcribed Image Text:

Y 28,891 +615A [30.07] [12.17]