13. At a company, 75% of the employees pass a screening test to see if they...
17. Find the mean of X given Y = - The joint probability density function is f(x, y) for random variables X and Y. #x, y) = f (xy + y) 0<x<1,0<y<1 0 Elsewhere = 21. A uniform distribution has parameters a = 0.1 and B = 0.9. P(0.23 < X < 0.67) = 13. At a company, 75% of the employees pass a screening test to see if they need additional training. Of those that pass the screening test,...
11. A medication has side effects. Given that nausea is a side effect, the probability is 0.42 for getting bad headaches. The probability for getting nausea is 0.32. The probability is for getting nausea and bad headaches. 12. The distribution function for X is F(x). Find the value of the density function at X = 6. Li F(x) = 0 0.27 0.51 0.78 1 x <5 5 <x< 6 6<x<7 7<x<8 x 8 f(6) 13. At a company, 75% of...
1. The general manager of the Hilton Hotel in Sydney is evaluating an employment screening test for the front office clerical staff. During this evaluation all new clerical employees are given the test. 70% pass the test; the rest fail. At a later time, after the new clerical employees have been working for a while, their performance is evaluated as being satisfactory or unsatisfactory. Historically, 80% of all clerical employees have been found to be satisfactory, and 75% of the...
A human resource (HR) manager wants to see if employees of the company are experiencing burnout. The HR manager knows that burnout in the general population is defined at 89, and obtains a random sample of employees from the company who fill out a burnout questionnaire. What can the HR manager conclude with α = 0.05? The data are below. id burnout 2 6 8 1 3 4 5 7 11 21 19 15 45 33 24 46 30 47...
Case Study Scenario: You’re a consultant for GlobaTech, a relatively large technology company with $800 million a year in revenue and 1,233 employees. Recently many of their employees have left the company. Job attrition is costly for the company. The hiring, training, and integration of each new person costs money, not to mention the work lost during the search process. You are asked to help GlobaTech in identifying important areas for improvement with respect to employee retention. 1) GlobaTech believes...
Chapter 5: Discussions 1. Scheduling Employees: Suppose you own a catering company. You hire temporary employees to act as servers from the local college. Not being the most reliable employees, there is an 80% chance that any one server will actually show up for a scheduled event. For a wedding scheduled on a given Saturday you need at least 5 servers. (a) Suppose you schedule 5 employees, what is the probability that all 5 come to work? (b) Suppose you...
A company manufacturing computer chips finds that 92% of all chips manufactured correct function. In an effort to increase the percentage of functional chips, management decides to provide additional training to those employees hired within the last year. After training was implemented, a sample of 450 randomly selected chips revealed 423 correctly functioned. A hypothesis test is performed to determine if the additional training was effective IN INCREASING the functional rate. Which of the following statement is true about this...
Managing from distance to work for a startup company. The company had employees who were teleworking for them from outside of the U.S. Some of those employees left the company during the first or second phases of the new company’s projects after relevant training was provided for them. They left for better job opportunities by leveraging this startup company to find new employer. This harmed the company significantly. The project managers had to put their teams together based their own...
You’re a consultant for GlobaTech, a relatively large technology company with $800 million a year in revenue and 1,233 employees. Recently many of their employees have left the company. Job attrition is costly for the company. The hiring, training, and integration of each new person costs money, not to mention the work lost during the search process. You are asked to help GlobaTech in identifying important areas for improvement with respect to employee retention. 1. GlobaTech believes that they should...
The local Department of Motor Vehicles (DMV) issues new licenses and renews licenses. (See the diagram below.) 48 applicants enter the DMV per hour. All applicants see the receptionist first. The receptionist directs them in one of three directions: 75% of the applicants are sent directly to the issue-license Station where a new photo and license are done. 10% of the applicants must first take a multiple-choice test on one of the computers. The remaining 15% of applicants should first...