Question

In a class of students, the following data table summarizes the amount of sleep of students and whether they have an A in the class. What is the probability that a student chosen randomly from the class slept 6 hours or less?

Slept more than 6 hours Slept 6 hours or less
Has an A 4 5
Does not have an A 2 19

Answer 1

[AI-generated answer — Bot GPT 3.5]

To find the probability that a student chosen randomly from the class slept 6 hours or less, you need to add up the number of students who slept 6 hours or less and divide it by the total number of students in the class.

The total number of students who slept 6 hours or less is 5 + 19 = 24.
The total number of students in the class is 4 + 5 + 2 + 19 = 30.

Therefore, the probability that a student chosen randomly from the class slept 6 hours or less is 24/30 = 0.8 or 80%.