Vending machines on a college campus offer a variety of snacks. The purchasing agent believes that each type of snack is equally preferred by students and consequently
Orders equal quantities. The number of snacks sold from vending machines on this
Campus for the last six months is shown in the following table. If the purchasing agent is
Correct, how many candy bars would we expect to have been sold? $$\begin{array} { | c | c | c | c | c | }
\hline \text { Snack Type } & \text { Chips } & \text { Candy Bars } & \text { Crackers } & \text { Nuts } \
\hline \text { Purchase Frequency } & 159 & 198 & 174 & 149 \
\hline
\end{array}$$
A) 170
B) 198
C) 125
D) 180
E) 680

Question

Vending machines on a college campus offer a variety of snacks. The purchasing agent believes that each type of snack is equally preferred by students and consequently
Orders equal quantities. The number of snacks sold from vending machines on this
Campus for the last six months is shown in the following table. If the purchasing agent is
Correct, how many candy bars would we expect to have been sold? $$\begin{array} { | c | c | c | c | c | } 
\hline \text { Snack Type } & \text { Chips } & \text { Candy Bars } & \text { Crackers } & \text { Nuts } \
\hline \text { Purchase Frequency } & 159 & 198 & 174 & 149 \
\hline
\end{array}$$
A) 170
B) 198
C) 125
D) 180
E) 680

Quizplus · Accepted Answer

If each type of snack is equally preferred, the expected number of each type sold would be the average of all types sold. The total number of snacks sold is $159 + 198 + 174 + 149 = 680$. Dividing this by the number of snack types (4) gives $680 / 4 = 170$.

Vending Machines on a College Campus Offer a Variety of Snacks