Question: An insurance company is trying to estimate the average number of sick days that full-time food-service workers use per year. They would like to develop a model to predict the average number of sick days based on whether any children between the ages of 4 and 12 years old reside at home with them.

Here is the regression equation (i.e., the estimated model):

Y = 3.996 + 0.358X

If a food service-worker has 3 children, what is the predicted average number of sick days OR on average how many sick days should the insurance company expect for this employee?