Question

Approximately 7% of students at a local high school participate in after-school sports all four years of high school. A group of 45 seniors is randomly chosen. Of interest is the number that participated in after-school sports all four years of high school. On average how many seniors out of 45 are expected to have participated in after- school sports all four years of high school? Round to 1 decimal place. average = mean = Expected value = np

Answer 1

The average or expected number of students to have participated in after- school sports all four years of high school is;

`3.2\text{ seniors}`

Step-by-step explanation:

Given that 7% of students at a local high school participate in after-school sports all four years of high school.

`P=7\text{\% = 0.07}`

If a group of 45 senior is randomly selected.

`N=45`

The average or expected number of students to have participated in after- school sports all four years of high school will be;

`\begin{gathered} n=P* N \\ n=0.07*45 \\ n=3.15 \\ n=3.2\text{ - to 1 decimal place} \end{gathered}`

Therefore, The average or expected number of students to have participated in after- school sports all four years of high school is;

`3.2\text{ seniors}`