Question

Bill took a survey of high school students to see how many had part-time jobs last summer. The results of thesurvey are shown in the table. Compare the probability that a student in the junior class had a part-time job tothe probability that a student in the sophomore class had a part-time job.

Answer 1

In order to determine the probability of a given event to occur, we need to divide the number of desirable outcomes by the total number of possible events. For this case, we need to divide the number of students from the class that have a summer job by the total number of students from that class.

For junior, we have:

`\begin{gathered} p(\text{junior)}=(23)/(44)=0.523 \\ \end{gathered}`

For Sophomore, we have:

`p(\text{sophomore)}=(23)/(68)=0.365`

A junior is more likely than a sophomore to have a job.