Question

Please help Magan recorded the grade-level and instrument of everyone in the middle school

School of Rock below.


Based on these results, express the probability that a seventh grader chosen at

random will play the guitar as a fraction in simplest form?

Answer 1

`Probability = (11)/(40)`

Explanation:

Given

See attachment

Required

The probability that a 7th grader selected will play guitar.

From the attachment, we have:

`7th\ graders =11+8+8+13`

`7th\ graders =40`

7th graders that can play guitars are:

`Guitars = 11`

So, the probability is:

`Probability = (Guitars)/(7th\ graders)`

`Probability = (11)/(40)`