Do Americans support free tuitions to go college? It seems like a great, year ar

Question

Do Americans support free tuitions to go college? It seems like a great, year are aware that perhaps the real issue is having time to study outside of class. So year poll 76 neighbors, and find that 50 support free tuition. If you randomly chose one of these 75 to appear on a panel, what is the probability that you will pick, someone who support free tuition? Between semesters, Professor Kerr uses OpenBooks the background of his to investigate the background of his students. He is looking for indicators of trouble. In his experience, there are two such indicators a long time gap between time in school, and low grades in previous courses in mathematics. For his Fall 2017 Statistics class, 25 students are enrolled. Of these 25, 5 show a long time gap between time in school, 7 show low grades in previous courses, and show both. What is the probability that a randomly chosen student among the 25 will b on Professor Kerr's "potential trouble" list?

Explanation / Answer

Required probability = (No. of people who support free tuition)/Total number of people = 50/75 = 0.6666

For the second question, the right side of the image is cut-out. I will still give the formula for you to calculate.

b) Probability of troubled list = (5+7 - x)/25 where x is the no. of students who are common to both the groups. We subtract x here to avoid double-counting.

Hence, the probability is (12-x)/25

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