22) Your stock portfolio includes 3 categories of companies: Electronics, Automotive, and Pharmaceutical.The table below shows the performances of the stocks in your portfolio after one year.IncreasedUnchangedDecreasedTotalElectronics10725Automotive16.10Pharmaceutical4215Total15201550Find the probability that a Pharmaceutical stock from your portfolio changed in value after one year, that is, iteither increased or decreased.a) 0.12b) 0.4c) 0.2d) 0.9e) 0.5f) none of these

22) Your stock portfolio includes 3 categories of companies: Electronics, Automotive, and Pharmaceutical. The table below shows the performances of the stocks in your portfolio after one year. Increased Unchanged Decreased Total Electronics 10 25 Automotive 1 10 Pharmaceutical 4 6. 15 Total 15 20 15 50 Find the probability that a Pharmaceutical stock from your portfolio changed in value after one year, that is, it either increased or decreased. a) 0.12 b) 0.4 c) 0.2 d) 0.9 e) 0.5 f) none of these

22) Your stock portfolio includes 3 categories of companies: Electronics, Automotive, and Pharmaceutical. The table below shows the performances of the stocks in your portfolio after one year. Increased Unchanged Decreased Total Electronics 10 25 Automotive 1 10 Pharmaceutical 4 6. 15 Total 15 20 15 50 Find the probability that a Pharmaceutical stock from your portfolio changed in value after one year, that is, it either increased or decreased. a) 0.12 b) 0.4 c) 0.2 d) 0.9 e) 0.5 f) none of these

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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An examination has historical record of a 25% rate of failure.For a group of 15 students sitting for the exam,calculate the probability that:a. A minimum of 12 will succeed. b.All individuals will successfully complete the exam.
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Suppose a math class contains 41 students. There are 18 females (three of whom speak Spanish) and 23 males (six of whom speak Spanish). Give all answers as decimals to at least two decimal places.1. What is the probability that a randomly selected student speaks Spanish, given that the student is female? 2. What is the probability that a randomly selected student does not speak Spanish, given that the student is male? 3. What percent of Spanish speaking students are male? 4. If someone does not speak Spanish what is the probability they are female?
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Suppose a math class contains 37 students. There are 19 females (six of whom speak Spanish) and 18 males (five of whom speak Spanish). Give all answers as decimals to at least two decimal places.1. What is the probability that a randomly selected student speaks Spanish, given that the student is female? 2. What is the probability that a randomly selected student does not speak Spanish, given that the student is male? 3. What percent of Spanish speaking students are male? 4. If someone does not speak Spanish what is the probability they are female?
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The personnel director of Gadget Manufacturing Company has compiled the following table, which shows the percent of men and women employees who were absent the indicated number of days. Suppose there are as many women as men employees. Sex Absences (Days) Men Women 0 20% 20% 1–5 40% 20% 6–10 40% 20% 11 or more 0% 40% Total 100% 100% (a) Find the probability that an employee missed 6–10 days, given that the employee is a woman. (Enter your probability as a fraction.)(b) Find the probability that an employee is a woman, given that the employee missed 6–10 days. (Enter your probability as a fraction.)