Flagg and Rossi Own a Fleet of Four Limos

Multiple Choice

Flagg and Rossi own a fleet of four limos.The current odometer readings for the four limos are shown in the table below: Suppose you were to take all possible simple random samples of size 2 that could be selected from this limo population and calculated the sample mean odometer reading for each sample.Which one of the following graphs shows the sampling distribution of the sample mean?

A) Graph a
B) Graph b
C) Graph c
D) Graph d
E) none of the above