Question

This table shows how many sophomores and juniors attended two schoolevents.TotalJazz band Volleyballconcert game3542Sophomora7760Junior3624Total7166137What is the probability that a randomly chosen person from this group is asophomore?Round your answer to two decimal places.A. 0.56B. 0.31C. 0.52D. 0.26

Answer 1

The formula to calculate the probability of an event A happening is given as

`P(A)=\frac{Number\text{ of times A happened}}{Number\text{ of total outcomes}}`

To find the probability of picking a sophomore, we need to get the necessary parameters:

Number of sophomores: 77

Total number of students: 137

Therefore, the probability is calculated as

`\begin{gathered} P(\text{sophomore)}=(77)/(137) \\ P(\text{sophomore)}=0.56 \end{gathered}`

The correct option is OPTION A (0.56).