The Manager of a Grocery Store Believes That the Number

question 56

Multiple Choice

The manager of a grocery store believes that the number of people waiting in the express check out lane follows a Poisson distribution.While watching the lane at random times throughout the day and week, she collects the following information. $\begin{array}{|l|r|r|r|r|r|r|}\hline \begin{array}{l}\text { People waiting in express } \\\text { check out lane }\end{array} & 0 & 1 & 2 & 3 & 4 & \geq 5 \\\hline \text { Observed frequency } & 35 & 41 & 22 & 14 & 3 & 2\\\hline \end{array}$
Using $\alpha$ =0.10, the critical value of chi-square for this goodness of fit test is _______.

• A)9.49
• B)7.81
• C)7.78
• D)10.28
• E)11.41

---

Definitions:

Equilibrium Quantity

The quantity of goods or services supplied that is equal to the quantity demanded at the market equilibrium price.

Rent Control

Governmental regulation of the amount landlords can charge for residential housing, intended to make housing more affordable.

Equilibrium Level

A condition where the supply and demand in the market are equal, leading to steady prices and amounts.

Supply Curve

A visual chart that illustrates how the price of a product correlates with the amount suppliers are prepared to manufacture and sell.