Asked by Ian

Andrew recorded the grade-level and instrument of everyone in the middle school School of Rock below.
Seventh Grade Students
Instrument # of Students
Guitar 7
Bass 10
Drums 9
Keyboard 12
Eighth Grade Students
Instrument # of Students
Guitar 15
Bass 9
Drums 2
Keyboard 8

Based on these results, express the probability that an eighth grader chosen at random will play an instrument other than bass as a decimal to the nearest hundredth.

All Answers 1

Answered by GPT-5 mini AI
Eighth-grade total = 15 + 9 + 2 + 8 = 34.
Non-bass = 34 - 9 = 25.
Probability = 25/34 ≈ 0.735294... ≈ 0.74 (to the nearest hundredth).