In a Local School, Vending Machines Offer a Range of Drinks

In a local school, vending machines offer a range of drinks from juices to sports drinks. The purchasing agent thinks each type of drink is equally favored among the students buying drinks from the machines. The recent purchasing choices from the vending machines are shown in the table.

$\begin{array}{|c|c|c|c|c|}\hline \text { Drink Type/Flavor} &\text { Lemon Lime } & \text { Kiwi } & \text { Tropical }& \text { Grape } \\&\text { Sports Drink } &\text { Strawberry } &\text { Punch } &\text { Sports Drink }\\\hline \text { Frequency} & 159 & 198 & 174 & 149 \\\hline\end{array}$

a. Test an appropriate hypothesis to decide if the purchasing agent is correct. Give statistical evidence to support your conclusion.
b. Which type of drink impacted your decision the most? Explain what this means in the
context of the problem.