Justin recorded the grade-level and instrument of everyone in the middle school School of Rock below. Seventh Grade Students Eighth Grade Students Instrument # of StudentsInstrument # of Students Guitar 11 Guitar 4 Bass 5 Bass8 Drums 14 Drums 7 Keyboard 13 Keyboard 8 Based on these results, express the probability that a seventh grader chosen at random will play an instrument other than guitar as a decimal to the nearest hundredth
There are a total of 11 seventh grade students who play an instrument other than guitar (5 bass + 14 drums + 13 keyboard = 32 students).
The total number of seventh grade students is 11 (guitar) + 32 (other instruments) = 43 students.
Therefore, the probability that a seventh grader chosen at random will play an instrument other than guitar is:
32/43 ≈ 0.74
So, the probability as a decimal to the nearest hundredth is approximately 0.74.