Jaxson recorded the grade-level and instrument of everyone in the middle school School of Rock below.
Seventh Grade Students
Instrument # of Students
Guitar 5
Bass 13
Drums 14
Keyboard 8
Eighth Grade Students
Instrument # of Students
Guitar 2
Bass 12
Drums 11
Keyboard 15
Based on these results, express the probability that a seventh grader chosen at random will play the guitar as a decimal to the nearest hundredth.
To calculate the probability, we need to find the number of seventh grade students who play the guitar and divide it by the total number of seventh grade students.
The total number of seventh grade students is 5 + 13 + 14 + 8 = 40.
The number of seventh grade students who play the guitar is 5.
Therefore, the probability that a seventh grader chosen at random will play the guitar is 5/40 = 0.125.
Rounded to the nearest hundredth, the probability is approximately 0.13.