?What is the variable in part? a)?
A.the mean cost of a gallon of regular gas for all gas stations in this area
B. The mean cost of a gallon of regular gas for a random sample of 15 local gas stations
C. The mean cost of a gallon of gas at a particular local gas station
D. The cost of a gallon of regular gas at a local gas station
?What is the variable in part? a)? A.the mean cost of a gallon of regular gas…
?What is the variable in part? a)?