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Unformatted text preview: MATH 1131 3.0 - Fall 2010 Assignment 2 (Due Date: October 20, 2010) Question 1: A schools administrators are concerned about absenteeism at their school and the effect it has on students grades. The following data were compiled, based on a sample of students. Students Absent Medium Absent Grade Infrequently Absenteeism Frequently Low 1 9 8 Medium 6 35 7 High 8 9 2 a. What is the probability that a randomly selected student will have a low grade? b. What is the probability that a randomly selected student absent frequently? c. Are grades and frequency in absent independent events? Why? d. Knowing that a randomly selected student has high grade, what is the probability that that student is absent frequently? e. What is the probability that a randomly selected student has either high grade or absent frequently? Question 2: Microbes in a certain colony exposed to radiation have a 1 / 6 chance of being mutated....
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- Spring '10