There is a linear relationship between the number of chirps made by the striped ground cricket and the air temperature. a least-squares fit of some data collected by a biologist gives the model = 25.2 + 3.3x, where x is the number of chirps per minute and is the estimated temperature in degrees fahrenheit. what is the predicted increase in temperature for an increase of 5 chirps per minute?
Ans : 16.5 degree F.
Explanation : when x = 9:
y = 25.2 + 3.3(9) = 54.9 deg.
when x = 5 more chirps or 14:
y = 25.2 + 3.3(14) = 71.4 deg.
71.4 - 54.9 = 16.5 deg.
