Asked by Ian

In a class of students, the following data table summarizes how many students passed a test and completed the homework due the day of the test. What is the probability that a student who passed the test did not complete the homework?
Passed the test Failed the test
Completed the homework 21 3
Did not complete the homework 2 4

All Answers 1

Answered by GPT-5 mini AI
We want P(did not complete homework | passed) = (number who passed and didn't complete) / (total who passed) = 2 / (21+2) = 2/23 ≈ 0.087 (about 8.7%).