A large company has 3000 employees. The management has installed coffee machines everywhere in the building.After a while, the management wants to know whether or not the employees are satisfied with the coffee machines.It is decided to draw a simple random sample of 400 employees. It turns out that 300 employees complete thequestionnaire form. So there is a nonresponse problem. The sample data is summarized in the following Table.Level of satisfactionLevel of educationTotalLow educationHigh educationSatisfied23010240Not satisfied352560Total26535300a)Compute the response rate?b)Obtain the estimate of the percentage of employees in the company satisfied with the coffeefacilities.Previous research has showed that employees with a higher level of education are less satisfied with the coffeefacilities. Among the employees in the company 20% has a high education and 80% has a low education. Thus, aweighting adjustment procedure is carried out to reduce the nonresponse bias.c)d)facilities.e) Explain the difference between the weighted and unweighted estimate (obtained in (a) of the percentageof employee satisfied with coffee machines.Compute weights for low- and high-educated employees.Compute the weighted estimate of the percentage of employees in the company satisfied with the coffee

Given information: Level of satisfaction Level of education Total Low education High education…

Answered: A large company has 3000 employees. The…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 9595% confident that the sample percentage is within 2.52.5 percentage points of the true population percentage. Complete parts (a) and (b) below.
Each customer entering a department store will either buy or not buy some merchandise. An experiment consists of following 5 customers and determining whether or not they purchase any merchandise. What is the number of sample points in the experiment?
You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 95% confident that the sample percentage is within 4.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. (Round up to the nearest integer.) b. Assume that a prior survey suggests that about 35% of air passengers prefer an aisle seat. n = (Round up to the nearest integer.) ? Enter your answer in each of the answer boxes, MacBook DII DD 20 000 000 F10 F11 F12 esc F5 F6 F7 F8 F9 F1 F2 F3 F4 & ( ) ! @ # 1 2 4 5 6. 7 8 { Q W E R Y U P tab %3D K L %24
You are the operations manager for an airline and you are considoring a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 95% oonfident that the sample percentage is within 5.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisie seats. (Round up to the nearest integer.) b. Assume that a prior survey suggests that about 37% of air passengers prefer an aisle seat (Round up to the nearest integer.)
Explain the four different types of sampling and give an example of each.
Online Medical Info USA Today posted this question on its website: “How often do you seek medical information online?” Of 1072 Internet users who chose to respond, 38% of them responded with “frequently.” What term is used to describe this type of survey in which the people surveyed consist of those who decided to respond? What is wrong with this type of sampling method?
You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 90% confident that the sample percentage is within 4.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing known about the percentage of passengers who prefer aisle seats. n= 335 (Round up to the nearest integer.) b. Assume that a prior survey suggests that about 38% of air passengers prefer an aisle seat. (Round up to the nearest integer.)
Sony wants to administer a satisfaction survey to its current customers. Using their customer database, the company randomly selects 90 customers and asks them about their level of satisfaction with the company. What type of sampling is used? O A. Systematic O B. Stratified O C. Convenience O D. Simple random O E. Cluster
You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 99% confident that the sample percentage is within 4.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. n = 820 (Round up to the nearest integer.) b. Assume that a prior survey suggests that about 39% of air passengers prefer an aisle seat. n=0 (Round up to the nearest integer.) C
You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 95% confident that the sample percentage is within 5.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. (Round up to the nearest integer.) b. Assume that a prior survey suggests that about 33% of air passengers prefer an aisle seat. n3= (Round up to the nearest integer.)
You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 90% confident that the sample percentage is within 5.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. (Round up to the nearest integer.) b. Assume that a prior survey suggests that about 38% of air passengers prefer an aisle seat. (Round up to the nearest integer.)
A drug company is testing a new pain relief. They select 100 arthritics. Patient and conduct a double blind test of the drug to see if there are any unwanted side effects. 23% Report that they experienced unwanted side effects. Need any sample statistics

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