Identify the sampling technique used to obtain a sample.In order to determine the expected number of broken eggs per carton, an egg packagingworker selects a group of 30 cartons that come off a particular conveyor belt and counts thenumber of broken eggs within these cartons.A. Convenience samplingB. Stratified samplingO C. Cluster samplingO D. Random samplingNext

In order to determine the expected number of broken eggs per carton, an egg packaging worker selects…

Answered: Identify the sampling technique used to…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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A vaccine to prevent a severe virus was given to children within the first year of life as part of a drug study. The study reported that of the 3456bchildren randomly assigned the vaccine, 58 got the virus. Of the 1606 children randomly assigned the placebo, 46 got the virus. a. Find the sample percentage of children who caught the virus in each group. Is the sample percentage lower for the vaccine group, as investigators hoped? b. Determine whether the vaccine is effective in reducing the chance of catching the virus, using a significance level of 0.01.The first few steps of the hypothesis-testing procedure are given. Complete the procedure.
determine what type of sampling technique is used (Simple Random Sampling, Stratified Random Sampling, Systematic Sampling, Cluster Sampling, or Convenience Sampling). 5. A researcher wants to select ten students for a survey. Each student’s name is placed in a hat and 10 names are selected.
A random sample of employees participating in a company fitness program were asked how many days they logged an exercise activity in the past month. Their responses are reported in the histogram below.Based on the histogram above, what is the class width? Clas width = ? Days What is the sample size? Sample size = ? employees
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.)
You want to gather some data about students at a local high school. Match the name of the sampling method with the description of corresponding situation. Situations Selecting five classroom numbers at random then surveying all the students in each of these five rooms Surveying every 3rd driver coming through a tollbooth Pulling 50 names from a hat Sampling Method a. Cluster b. Simple Random c. Systematic d. Convenience e. Stratified
Identify the sampling techniques used in each scenario. e. surveying movie-goers as they exited the late movie, researchers determined that only young adults under the age of 22 see movies in the theater anymore.
A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 99% confident that his estimate is in error by no more than three percentage points? Complete parts (a) through (c) below. Question content area bottom Part 1 a) Assume that nothing is known about the percentage of computers with new operating systems. n=enter your response here (Round up to the nearest integer.) Part 2 b) Assume that a recent survey suggests that about 90% of computers use a new operating system. n=enter your response here (Round up to the nearest integer.) Part 3
Find the population mean or sample mean as indicated. Population: 6, 9, 3, 12, 14, 16 O A. x=11 OB. x= 12 O C. µ= 13 ΟD. μ= 10
The set of all possible values of a sample statistic is called a A. simple random sample. B. point estimate. C. census. D. sampling distribution.

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