A poultry farmer that dabbles in statistics is interested in exploring the relationship between two types of feed (layer pellets and scratch), water, and the output of his laying hens. For ten days he records the number of ounces of pellets and scratch the hens consume and the number of fluid ounces of water and tracks the number of eggs that are produced. After running a multiple regression model, he obtains the following equation:

y= 1.256 + 0.185 Scratch+ 0.295 Pellets+ 0.149 Water

Which of the following statements is best?

Pellets are not good predictors of egg production

For every egg produced, about 0.185 ounces of scratch must be consumed

Scratch is more efficient as a feed because it takes fewer ounces of scratch than ounces of pellets to produce an additional egg, holding all other independent variables constant

For every ounce of water consumed, the chickens produce approximately 0.15 eggs, holding all other independent variables constant