Blake enters data for weight (in hundreds of pounds) and miles per
gallon of cars into a statistics software package and finds a regression
equation of ý = 38.5 - 1.4x, where weight is the explanatory variable.
Based on this information, select Blake's conclusion about weight and
miles per gallon that is TRUE.
a.) For each additional one pound of weight, miles per gallon
stays relatively the same.
b.) For each additional one hundred pounds of weight, miles
per gallon decreases by 1.4 miles.