Problem:
The equation of the least-squares regression line for predicting average number of offspring per female from cone index is
Offspring = 1.41 0.44 × cone index
Required:
Use this to predict the average number of offspring per female for a year with a cone index of 0.25.
(a) 1.52
(b) 1.29
(c) 0.44
(d) 0.11