A superintendent wants to survey teachers in his district to determine their opinions on the new school calendar.  There are 14 different schools located in this school district.  The superintendent randomly picks 4 of the 14 schools.  At each of the 4 selected schools, they randomly pick 10 teachers to survey (for a total of 40 teachers).  What kind of study design is this?   a. Cluster Sample   b. Block Sample   c. Multistage Sample   d. Stratified Sample   e. Simple Random Sample

Q: Mrs. Trahan samples H assigned to a student. Select one: O a. simple O b. cluster O C. systematic n…

A: simple random sampling occurs when every sample in the population has equal chances of being…

Q: You want to interview 200 students in your school to determine their opinion on the new school…

A:

Q: Caitlyn has to determine how many of the 120 employees in her work place has comprehensive car…

A: Stratified sampling: In a stratified sample, researchers divide a population into homogeneous…

Q: A community college employs 86 full-time faculty members. To gain the faculty's opinions about an…

A: Given Information: There are 86 full time faculty members in total. The college president wishes to…

Q: a. Bob is wondering about people that use the Love Library. Bob stands outside the library and asks…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: How can you? Pick a simple random sample of 15 restaurants. Pick a systematic sample of 15…

A: To pick a random sample of 15 restaurants, allot a unique serial number to each restaurant given in…

Q: You want to study adults’ opinions on the recent elections. You ask 100 college students to fill out…

A: We are going to study on adults opinions on the election. So that our sampling frame is all adults.…

Q: Nationally, 83% of Americans have earned a high school diploma.  We want to see if the proportion of…

A: We have to find sample proportion.

Q: BE SURE TO ANSWER THE LAST OPEN ENDED QUESTION!! Petra is doing a survey Which of the following…

A: Given that Which of the following descriptions is an example of convenience sampling? A. Petra…

Q: The sample data below displays the number of tornadoes per year in Missouri for the years 1995-2004.…

A: We have given the sample data below displays the number of tornadoes per year in Missouri for the…

Q: Identify the sampling technique used in the following information. An important part of employee…

A: The objective is to identify the sampling technique for the given scenario:

Q: A large company has 3000 employees. The management has installed coffee machines everywhere in the…

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

Q: ) State which sampling method used in the following scenarios i. Select the first 19 customers who…

A: Sampling techniques are used to select a sample inorder to provide an adequate description of the…

Q: The head of a state education department wants to see how high school students feel about the new…

A: The head of a state education department wants to see how high school students feel about the new…

Q: The city of Raleigh has 7200 registered voters. There are two candidates for city council in an…

A: It is given that, the day before the election, a telephone poll of 200 randomly selected registered…

Q: Name the sampling method in the following situation: The CEO for a restaurant chain wants…

A: The answer to the first question is simple random sampling as the samples taken are random from all…

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: In a survey conducted by a reputable marketing agency, 248 of 1000 adults 19 years of age or older…

A: Given that ; Sample size (n) = 1000 adults No. Of adults using their cell phones in every bathroom…

Q: In a survey conducted by a reputable marketing agency, 277 of 1000 adults 19 years of age or older…

A: Sample size (n) = 1000 adultsNo. Of adults using their cell phones in every bathroom trip (x) = 277

Q: Jamu Sido Mampir Company has herbal medicine cottage branches in three locations. The company…

A: NoHerbal Hut 1Herbal Hut 2Herbal Hut…

Q: Determine which Group Person Sample is being used in the following Scenarios.   Principal Fuller…

A: Here we want to know which sampling method is used .

Q: service they received

A: In this question, we need to identify the method of sampling with the reason. Note: we are only…

Q: Determine which Sample Type is used in  the following scenarios.   President Biden want to survey…

A: A population is the set of all objects of interest. A sample is a subset of the population. It is…

Q: In an AOL survey of Internet users, this question was posted online: "Have you ever been hit by a…

A: A population is a collection of all possible observations, whereas a census tries to gather whole…

Q: A researcher wishes to conduct an English newspaper readership survey based on race in a town with a…

A: Given that: Population size, N=100000 people Population breakdown: 50% Chinese, 30% Malay, 18%…

Q: Identify the sampling method for each scenario.   ​a.  You randomly sample 200 households in your…

A: scenarios are given and we need to find out which sampling method will be used.

Q: A researcher wants to know how registered voters in her state feel about health care. She obtains a…

A: Given, Researcher wants to know how registered voters in her state feel about health care. She…

Q: She divides her constituency into three income classes: low-income households, middle- households,…

A: 4. In stratified sampling, the population is divided in such a way that it is homogeneous within the…

Q: know the preference of Marikeños regarding vaccine brand for booster shot, the city health officer…

A: Give that, To know the preference of Marikeños regarding vaccine brand for booster shot, the city…

Q: We want to learn about the country of origin, gender, NYC borough of residence, ethnicity, and age…

A: A sample is a subset of a population, whereas a population is a full set that represents every…

Q: b. Which group is more likely to have taken a vacation in the last year: college graduates or…

A: Given data:   Yes No Total College Graduate 183 67 250 Not a College Graduate 126 124 250…

Q: 9) A survey of 1688 American households found that 14% of the households own at least two bicycles.…

A: Solution 9:  A survey of 1688 American households found that 14% of the households own at least two…

Q: The city of Frederick has 9432 registered voters. There are two candidates for the city council in…

A: Solution-: The city of Frederick has 9432 registered voters. The day before the election, a…

Q: Identify the sampling technique used. Thirty five sophomores, 53 juniors and 63 seniors are randomly…

A: Given that, 35 sophomores,53 juniors and 63 seniors are randomly selected from 559 sophomores,397…

Q: Food services sent a survey to student, faculty, and staff in order to understand the lunch…

A: Given that, Food services sent a survey to student, faculty, and staff in order to understand the…

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

A: In simple random sampling, each of the unit is population has equal chance of being selected in the…

Q: Based on this sample, we could expect _____ of the 6,000 registered voters to vote for Brown.…

A: Given that Sample size n = 350 Number of voters to vote for Brown = 151 Number of voters to vote for…

Q: Need the correct answer, thanks. Question: A doctor samples patients by selecting every third…

A:

Q: The following data consist of the present school enrollment of the Dr Vesse High School. A study on…

A: In Stratified random sampling, the population is divided into groups based on a characteristic.…

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.