Question

Jace recorded the grade-level and instrument of everyone in the middle school School of Rock below. Seventh Grade Students Eighth Grade Students Instrument # of Students Instrument # of Students 11 Guitar 13 14 Guitar Bass Drums Keyboard Bass Drums Keyboard 13 8 14 3 Based on these results, express the probability that a seventh grader chosen at random will play an instrument other than bass as a percent to the nearest whole number.



please answer , I have no idea how to do this ​

Answer 1

Using the table, it is found that there is a 77% probability that a seventh grader chosen at random will play an instrument other than bass.

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• A probability is the number of desired outcomes divided by the number of total outcomes.

• The table is given at the end of this question.

From the table:

• There are 12 + 10 + 9 + 12 = 43 7th grade students.
• Of those, 33 play an instrument other than the bass.

Then:

$p = \frac{33}{43} = 0.77$

0.77 = 77% probability that a seventh grader chosen at random will play an instrument other than bass.

A similar problem is given at https://brainly.com/question/22203443