A sociology teacher asked his students to complete a survey at the beginning of the year. One survey question asked, "How responsible are you?" Another question asked, "How many siblings do you have?"

Question

Math

A sociology teacher asked his students to complete a survey at the beginning of the year. One survey question asked, "How responsible are you?" Another question asked, "How many siblings do you have?"

The probability that a student is irresponsible is 0.3, the probability that a student has 1 sibling is 0.8, and the probability that a student is irresponsible and has 1 sibling is 0.1.

What is the probability that a randomly chosen student is irresponsible or has 1 sibling?

Asked by kristen8503 on 12 Dec 03:04

Last updated by Jill W on 24 Oct 12:37

1 Answers