Suppose I was interested in a snapshot of the number of persons leaving a grocery store today to find out if they intended to vote today.  What type of sampling would be used? Now, suppose a study was conducted two weeks ago where a list of registered voters was available and a random sample of registered voters was selected to estimate the proportion of registered voters who intended to vote on November 3.  What type of sampling was used? Which results are "better?"  When answering this, indicate how you are interpreting the word "better."

Q: The internal auditing staff of a local manufacturing company performs a sample audit each quarter to…

A:

Q: A researcher decided to gather data from all 150 employees in a certain office instead of just…

A: A certain office has 150 employees. All of them are selected by a researcher to gather data from.

Q: A statistics professor wants to know how her students feel about an introductory statistics course…

A: Cluster sampling: In cluster sampling the whole population is divided into different sections or…

Q: Hello, How do you set up and solve? Thank You!

A: Variance of the sampling distribution of the proportions:Consider p-hat as the sample proportion and…

Q: A newspaper posted this question on its​ website: "How often do you seek medical information​…

A: Voluntary response sample:If the sample made up of volunteers or self-selected participants then the…

Q: Twenty years ago, 53% of parents of children in high school felt it was a serious problem that high…

A:

Q: The average age of the MBA students in a statistics class is 30.7 years old. The ages of five…

A: Given data: 36, 25, 25, 29, 30.

Q: Identify the type of sampling technique used by the researcher in each of the following situations.…

A: We have given the following statement about the sampling  technique.

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: What is Random Sampling?

A: Random sampling: A simple random sample of size n is collected from a large population where each…

Q: Among the random and non-random sampling techniques that we have, which do you think is the most…

A: Random/Probability sampling is a technique in which each member of the population has an equal and…

Q: Q1. Before conducting a two-factor analysis of variance, a professor wants to know how many unique…

A: As per our guidelines, we are allowed to answer first question only. Thanks   Q 1) Two factors are…

Q: When Rich calculated the sample mean in Part 2, he mistakenly used the numbers 20, 25, 13, 9, 15,…

A: Given numbers are 20, 25, 13, 9, 15, 11, 17, 17, 30 Sample mean = Total sum of given numbersTotal of…

Q: Categorize the type of sampling used in each of the following situations (simple random, stratified,…

A: To maintain quality control in a brewery, every 20th bottle of beer coming off the production line…

Q: is a sampling considered biased?

A: We know that The sampling method is called biased when it favors some outcomes over the others…

Q: Snoopy Brown is interested in the number of businesses that do not allow dogs in St. Paul, MN. To…

A: Snoopy Brown is interested in the number of businesses that do not allow dogs in St Paul, MN. To…

Q: The U.S. Census Bureau reported that in 2015 the proportion of adult Americans, ages 25 and older,…

A: a) Assume that p is population proportion of adult Americans, ages 25 and older, who have a…

Q: Twenty years ago, 46% of parents of children in high school felt it was a serious problem that high…

A:

Q: should their sample size be?

A: here use solvin's formula

Q: What is the difference between a cluster sample and a stratified sampling

A: There are broadly two types of sampling procedures or methods: one is probability and the other is…

Q: Twenty years ago, 54% of parents of children in high school felt it was a serious problem that high…

A: From the provided information, Sample size (n) =750 and p0 = 0.54

Q: The U.S. Census Bureau reported that in 2015 the proportion of adult Americans, ages 25 and older,…

A: a) Consider that p is population proportion of adult Americans, ages 25 and older, who have a…

Q: Twenty years ago, 54% of parents of children in high school felt it was a serious problem that high…

A:

Q: Twenty years ago, 57% of parents of children in high school felt it was a serious problem that high…

A: The single proportion  binomial test is used to compare a proportion of responses or values in a…

Q: Twenty years ago, 56% of parents of children in high school felt it was a serious problem that high…

A: Using the given data fill the blanks

Q: A Senior Housemaster wishes to investigate whether some residents in his Hall are Homosexuals and…

A: Given A Senior Housemaster wishes to investigate whether some residents in his Hall are Homosexuals…

Q: A school board would like to determine whether there is a difference in average SAT scores for…

A: Paired data is used when experimental Unit is same on which two different treatment are apllied

Q: Twenty years ago, 54% of parents of children in high school felt it was a serious problem that high…

A:

Q: What sampling method is used when a statistic student did a research on the time spend by grade11…

A: Simple random sampling: A procedure for selecting a sample of size n out of a finite population of…

Q: Twenty years ago, 47% of parents of children in high school felt it was a serious problem that high…

A: Given that  Sample size n =900 Population proportion p=47%=0.47

Q: What type of sampling is used?

A:

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A: The hypothesis tests, contain two hypothesis: null hypothesis and alternate hypothesis. The…

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A:

Q: Twenty years ago, 54% of parents of children in high school felt it was a serious problem that high…

A:

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A: Given : n = 700 p = 0.52

Q: Identify which of these types of sampling is used: random, systematic, convenience, stratified, or…

A: Simple random sampling: Every member has an equal chance of being included in the sample.…

Q: Espaí A nationwide job recruiting firm wants to compare the annual incomes for childcare workers in…

A:

Q: If the population of ABM students of Malaya Integrated High School has a mean of 12.45, what is the…

A: Given, Population mean = μ = 12.45 Assume that this population follows normal distribution,  X ~ N…

Q: A previous study showed that 69% of community college students have read a book for personal…

A: Given info: A previous study showed that 69% of community college students have read a book for…

Q: rcher asked a random sample of students at the library on a Friday night, “How many hours a week do…

A: If the selected sample or data for analysis is selected in such a way that randomization is not…

Q: Which kind of sampling plan was used in each of the following situation? Would the plan result in an…

A: There are many sampling methods to select the sample from the population.  The samples need to be…

Q: Twenty years ago, 57% of parents of children in high school felt it was a serious problem that high…

A: Denote p as the true proportion of parents, who think that high school students were not being…

Q: Twenty years ago, 53% of parents of children in high school felt it was a serious problem that high…

A: 10.2.21-T

Q: Aspen trees tend to be smaller in the highlands of the park because they are subject to strong…

A: Systematic Sampling will be used here.

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

A: Given: The question posted online is: Have you ever been hit by a computer​ virus? Among the​…

Q: Suppose the true proportion of voters in the county who support a new fire district is 0.54.…

A:

Q: A television station asks its viewers to call in their opinion regarding the desirability of…

A: The convenience sample is obtained utilizing the subjects that are easily or conveniently available…

Q: A community college wants to find out how students enrolled in remote courses feel about remote…

A: From the given information, It is required to make focus group for all those students who are…

Q: Which type of sampling method is used in the following? All students living on each floor of a…

A: In simple random sampling, the samples are chosen at random from the whole population. In cluster…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.