Landon 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 8
Drums 5
Keyboard 14
Eighth Grade Students
Instrument # of Students
Guitar 10
Bass 9
Drums 4
Keyboard 5
Based on these results, express the probability that a student chosen at random will play the guitar as a decimal to the nearest hundredth.
