Please answer

Given that a linear model y=8.4-1.2x represents the predicted number of so-called "careless mistakes" made on a test following x hours of sleep. Hours of sleep can be measured in tenths of an hour, but mistakes cannot be measured in tenths. Does that make the model inappropriate? Explain. none of the answers are correct No, the model is appropriate: the model gives expected values, or averages, which are always continuous Yes, this model is not completely appropriate under the circumstances. They should have rounded to 8 and 1 . Yes, this model is not appropriate because it does not predict individual test scores