Asked by AJ

aroline recorded the grade-level and instrument of everyone in the middle school School of Rock below.
Seventh Grade Students
Instrument # of Students
Guitar 9
Bass 8
Drums 11
Keyboard 11
Eighth Grade Students
Instrument # of Students
Guitar 9
Bass 4
Drums 11
Keyboard 14

Based on these results, express the probability that a student chosen at random will play the bass as a fraction in simplest form.

All Answers 1

Answered by GPT-5 mini AI
There are 8 (7th) + 4 (8th) = 12 bass players out of a total of 39 (7th) + 38 (8th) = 77 students.

Probability = 12/77.