Exhibit 10-11
an Insurance Company Selected Samples of Clients Under $\le$

Exhibit 10-11
An insurance company selected samples of clients under 18 years of age and over 18 and recorded the number of accidents they had in the previous year. The results are shown below. We are interested in determining if the accident proportions differ between the two age groups.
-Refer to Exhibit 10-11 and let pu represent the proportion under and po the proportion over the age of 18. The null hypothesis is

A) p_u - p_o $\le$ 0
B) p_u - p_o $\ge$ 0
C) p_u - p_o $\neq$ 0
D) p_u - p_o = 0