A market researcher obtains a sample of 50 people by standing outside a store and asking every 20th person who enters the store to fill out a survey questionnaire until she has the 50 people. i. What sampling method is being used here? ii. Will the resulting sample be a random sample? iii. Will the sample be a simple random sample? Explain your answe

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: It is given that margin of error (E) is 0.045 and the confidence level is 0.99.

Q: An accounting firm consists of 200 accountants, 150 bookkeepers and 30 assistants. They want to know…

A: Given Information: Name of the groups=1. Accountant2. Bookkeepers3. AssistantsNo. of…

Q: Find the population mean or sample mean as indicated.   ​Sample: 15​, 10​, 9​, 13​, 13

A:

Q: a stratified random sample? WO ber the students from 1 to 2000 and us ey the first 100 students to…

A: Stratified sampling is a process of random sampling. It is used to divide a population into…

Q: medical information​ online?" Of 1072 Internet users who chose to​ respond, 38% of them responded…

A: The term used to describe this type of survey is C. The respondents are a voluntary response…

Q: what is sampling methods?   A large social media company wants to survey its users about their…

A: Sample is a small part (or) portion of the population. For example, to check the weights of male in…

Q: Find the population mean or sample mean as indicated.   ​Sample: 25​, 10​, 3​, 6​, 11

A: Given: Sample data: 25, 10, 3, 6, 11 Required: To find the population mean or sample mean as…

Q: Identify which type of sampling is used.  In an effort to quickly generate a sample, a pollster…

A: Sampling methods: Simple random sampling: In simple random sampling, each unit in the population…

Q: In your "Introduction to College Mathematics" class last semester, the instructor gave four tests.…

A: Given Scores90, 86, 70 , 80Possible sample size will be 1,2,3,4The data has been entered into excel…

Q: Simple Random Sampling Stratified Random Sampling Systematic Sampling d. Cluster Sampling e.…

A: Simple Random Sampling involves selecting participants from a population in a way that every…

Q: Identify which type of sampling is used: random, systematic, convenience, stratified, or cluster. To…

A: Sony randomly selects 30 concerts during a certain week and surveys and all concert goers to…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: Given Information:Margin of error, E=1.5%=0.015Confidence level, c=95%=0.95

Q: What is the degree of freedom if the sample size is 25. Select the correct response: 25 26 24

A: We have given that,  Sample size (n) = 25 Then,  We will find the degree of freedom (df) = ?

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A:

Q: find the sample proportion with n=1,120 and x=616

A: The random variable X is normally distributed. X ~ B (n, p) The sample size is 1120. The number of…

Q: Identify the sampling technique used. A community college student interviews everyone in a…

A: According to the given information, we have Given that a community college student interviews…

Q: Identify which type of sampling is used: random, systematic, convenience, stratified, or cluster. To…

A: Given that To determine the customer opinion of their check in service American airlines randomly…

Q: Homer Simpson is interested in studying the ratio of the various colors of sprinkles on Lard Lad…

A: Introduction: Here, it is not mentioned whether the three donuts of each variety are chosen randomly…

Q: Suppose you want to find a simple random sample of 75 questions out of the entire population of…

A: Here the entire population contains N = 3631 questions. A simple random sample of size n = 75…

Q: You are the operations manager for an airine and you are considering a higher fare level for…

A: It is given that margin of error (E) is 0.015 and the confidence level is 0.90.

Q: Identify which type of sampling is used.  Every 5th student on the roster is selected for a sample

A:

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A:

Q: How is a sample related to a population? Choose the correct answer below. O A. A sample is a…

A: See the solution

Q: Given 1,400 freshmen students with 600 male students and 800 female students, describe the way you…

A: Given: Total population, N = 1400           Gender wise total population, for males, N1 = 600 and…

Q: Use the results from a survey of a simple random sample of 1155 adults. Among the 1155 respondents,…

A: Solution

Q: how do you find the simple random sample of 15 restaurants?

A: In simple random sampling each member of the population has an equal chance of being included in the…

Q: If we took three different samples of college students (one from California, one from Arizona, and…

A: The samples are derived of 500 students from three cities, city C, city AR and city AL.

Q: Identify the sampling techniques​ used, and discuss potential sources of bias​ (if any). Explain.…

A: We need to, Identify the sampling techniques​ used, and discuss potential sources of bias​ (if any).…

Q: Given 1400 freshmen students with 600 male students and 800 female students, describe the way you…

A: It is an important part of statistics. It is widely used.

Q: a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. n = 1356…

A: a)  Given that the margin of error is 0.035. Confidence level is 99%. And Significance level is 1%…

Q: To assess attitudes towards issues that affect the residents of a town, the town randomly chose 500…

A: Given data: Sample size (n) = 500 families Town received (x) = 370 completed surveys

Q: In 1949, an organization surveyed 1100 adults and asked, "Are you a total abstalner from, or do you…

A: Given : x1=374n1=1100p^1=0.34x2=330n2=1100p^2=0.30We want to find the value of test stitistic.

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: Suppose p is the true population proportion of air passengers who prefer aisle seats.

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.