The Manager of a Grocery Store Believes That the Number

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