(a) A manager at a bus company wants to survey employees about the new uniforms. Which of the following best describes a random sample of employees? The manager uses a computer program to draw 54 employees at random and selects these employees. Every set of 54 employees is equally likely to be drawn by the computer program. The manager forms 6 groups of employees based on the departments the employees are in. Then, she selects 9 employees at random from each group. The manager asks for volunteers and selects every volunteer until 54 employees are selected. She selects the volunteers because these employees are easily accessible. (b) A consultant wants to ask workers at a factory about the workers' job satisfaction. Which of the following best describes a cluster sample of workers? The consultant assigns each worker a different number. Using a random number table, he draws 90 of those numbers at random. Then, the consultant selects the workers assigned to the drawn numbers. Every set of 90 workers is equally likely to be drawn using the random number table. The consultant takes a list of the workers and selects every 5" worker until 90 workers are selected. The consultant forms groups of 30 workers based on the lengths of time the workers have worked at the factory. Then, he randomly chooses 3 groups and selects all of the workers in these groups. (c) A chemist at a pharmaceutical company wants to test the quality of a new batch of microscopes. Which of the following best describes a stratified sample of microscopes? The chemist forms 2 groups of microscopes based on the prices of the microscopes. Then, he selects 25 microscopes at random from each group. The chemist forms groups of 10 microscopes based on the laboratories that the microscopes are in. Then, he randomly chooses 5 groups and selects all of the microscopes in these groups. The chemist takes a list of the microscopes and selects every 5" microscope until 50 microscopes are selected. Continue Subr O 2021 McGraw Hill LLC. All Rights Reserved. Terms of Use I Privacy Cenm buscar 9°C Muy nublado

(a) A manager at a bus company wants to survey employees about the new uniforms. Which of the following best describes a random sample of employees? The manager uses a computer program to draw 54 employees at random and selects these employees. Every set of 54 employees is equally likely to be drawn by the computer program. The manager forms 6 groups of employees based on the departments the employees are in. Then, she selects 9 employees at random from each group. The manager asks for volunteers and selects every volunteer until 54 employees are selected. She selects the volunteers because these employees are easily accessible. (b) A consultant wants to ask workers at a factory about the workers' job satisfaction. Which of the following best describes a cluster sample of workers? The consultant assigns each worker a different number. Using a random number table, he draws 90 of those numbers at random. Then, the consultant selects the workers assigned to the drawn numbers. Every set of 90 workers is equally likely to be drawn using the random number table. The consultant takes a list of the workers and selects every 5" worker until 90 workers are selected. The consultant forms groups of 30 workers based on the lengths of time the workers have worked at the factory. Then, he randomly chooses 3 groups and selects all of the workers in these groups. (c) A chemist at a pharmaceutical company wants to test the quality of a new batch of microscopes. Which of the following best describes a stratified sample of microscopes? The chemist forms 2 groups of microscopes based on the prices of the microscopes. Then, he selects 25 microscopes at random from each group. The chemist forms groups of 10 microscopes based on the laboratories that the microscopes are in. Then, he randomly chooses 5 groups and selects all of the microscopes in these groups. The chemist takes a list of the microscopes and selects every 5" microscope until 50 microscopes are selected. Continue Subr O 2021 McGraw Hill LLC. All Rights Reserved. Terms of Use I Privacy Cenm buscar 9°C Muy nublado

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter8: Sequences, Series,and Probability

Section8.6: Counting Principles

Problem 74E: Lottery Powerball is a lottery game that is operated by the Multi-State Lottery Association and is...

See similar textbooks