The alternate theory and the null hypothesis are: H0: Equal frequencies exist. H1: There is inequity in the frequencies.

$$\begin{array}{|cc|} \hline \text { Category } & \boldsymbol{f}_{\boldsymbol{o}} \\ \hline \mathrm{A} & 10 \\ \mathrm{~B} & 20 \\ \mathrm{C} & 30 \\ \hline \end{array}$$

What is your decision regarding H0?

Chicken Delight claims that 90 percent of its orders are delivered within 10 minutes of the time the order is placed. A sample of 100 orders revealed that 82 were delivered within the promised time. At the .10 significance level, can we conclude that less than 90 percent of the orders are delivered in less than 10 minutes?

Only one in three new college graduates has a job waiting for them, according to a recent story. Overproduction of college grads and a poor economy were cited as the main causes. Eighty of the 200 recent graduates from your school who participated in the survey held jobs. Can we infer that a higher percentage of pupils at your institution have jobs at the .01 significant level?

A recent article in USA Today reported that a job awaits only one in three new college graduates. The major reasons given were an overabundance of college graduates and a weak economy. A survey of 200 recent graduates from your school revealed that 80 students had jobs. At the .02 significance level, can we conclude that a larger proportion of students at your school have jobs?

The National Safety Council reported that 52 percent of American turnpike drivers are men. A sample of 300 cars traveling southbound on the New Jersey Turnpike yesterday revealed that 170 were driven by men. At the .01 significance level, can we conclude that a larger proportion of men were driving on the New Jersey Turnpike than the national statistics indicate?

The U.S. Department of Transportation estimates that 10% of Americans carpool. Does that imply that 10% of cars will have two or more occupants? A sample of 300 cars traveling southbound on the New Jersey Turnpike yesterday revealed that 63 had two or more occupants. At the .01 significance level, can we conclude that 10% of cars traveling on the New Jersey Turnpike have two or more occupants?