文档介绍：Business Decision Analysis
Review Sections-Solve Problem
Chapter 02
A class contains 30 students. Ten are female (F) and . citizens (U); 12 are male (M) and . citizens; 6 are female and non-. citizens (N); 2 are male and non-. citizens. A name is randomly selected from the class roster and it is female. What is the probability that the student is a . citizen?
Your professor tells you that if you score an 85 or better on your midterm exam, then you have a 90%chance of getting an A for the course. You think you have only a 50% chance of scoring 85 or better. Find the probability that both your score is 85 or better and you receive an A in the course.
An instructor is teaching two sections (classes) of calculus. Each class has 24 students, and on the surface, both classes appear identical. One class, however, consists of students who have all taken calculus in high school. The instructor has no idea which class is which. She knows that the probability of at least half the class getting As on the first exam is only 25% in an average class, but 50% in a class with more math background. A section is selected at random and quizzed. More than half the class received As. Now, what is the revised probability that the class was the advanced one?
Chapter 03
Maria Rojas is considering the possibility of opening a small dress shop on Fairbanks Avenue, a few blocks from the university. She has located a good mall that attracts students. Her options are to open a small shop, a medium-sized shop, or no shop at all. The market for a dress shop can be good, average, or bad. The probabilities for these three possibilities are for a good market, for an average market, and for a bad market. The net profit or loss for the medium-sized and small shops for the various market conditions are given in the following table. Building no shop at all yields no loss and no gain.
Alternative
Good Market ($)
Average Market ($)
Bad Market ($)
Small Shop
75,000
2