The Internal Revenue Service wants to sample 1000 tax returns that were submitted last year to determine the percentage of returns that had a refund. Describe a sampling method that would be appropriate in this situation. Explain your reasoning

Q: A survey of 350 people shows that 210 people have seen a movie in the last month. Find the sample…

A: The sample proportion (p̂) is calculated by dividing the number of people who have seen a movie in…

Q: In elementary statistics, how do you calculate class width? I don't understand it.

A: According to the given information in this question We need to find that how we calculate class…

Q: Many firms price discriminate across customers by offering differentiated products (e.g., premium…

A: The marginal revenue curve for the high-quality product is (To be deenoted by MRH(qH)): Revenue for…

Q: Make an illustration of how you understand the key concept of sampling. Hint: part of a whole

A: The  sаmрling  frаme  is  the  асtuаl  list  оf  individuаls  thаt  the  sаmрle  will  be  drаwn…

Q: Check My Work eBook Thirty-six percent of all Americans drink bottled water more than once a week…

A: Given. p=0.36 a) n = 540

Q: In order to estimate how much annual income that their graduates earn after graduating, York U…

A: the average income 53450the SD is 7750the sample size is n=123.

Q: n Internet poll asked 4272 U.S. adults about their use of smart watches and fitness trackers. A…

A: Given:

Q: Why does Texas have some of the lowest voter turnout statistics in the nation?

A:

Q: The International Brotherhood of Slide Whistlers wants to conduct a survey to find what proportion…

A: Let COnfidence interval be 90% Zc=1.645 E=3%=0.03 p=0.5 n=?

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: A consumer group surveyed 146 airplane travelers after a flight and found that 132 of them would fly…

A:

Q: Why is a sample proportion generally used to estimate a population proportion instead of obtaining…

A: Population proportion: The proportion that is calculated from the population which has a specific…

Q: The population has a mean of 14 and a standard deviation of 3. The sample size of your sampling…

A:

Q: Suppose you wanted to know the proportion of students who wear glasses on campus and you went ahead…

A: you wanted to know the proportion of students who wear glasses on campus  you went ahead and survey…

Q: The state education commission wants to estimate the fraction of tenth grade students that have…

A: The sample size is The number of students reading above the eighth-grade level is . The objective is…

Q: A newspaper infographic titled "Baby's First Photo Reveal" summarized data from a survey of 1,000…

A: Answer is given by confidence interval.

Q: According to a college survey, 89% of all students work full time. Find the mean for the number of…

A: It is given that the number of observations are independent with the probability of success p = 89%…

Q: Explain the concept of stratified sampling. How would you conduct research through stratified…

A: In stratified sampling , we divide our whole population of interest into subgroups (homogeneous)…

Q: estimate the proportion of tenth graders reading at or below the eighth grade level. Ente

A: It is given thatThe total number of tenth graders =1265The number of students read above the eighth…

Q: A quality-conscious disk manufacturer wishes to know the fraction of disks his company makes which…

A:

Q: Eighty- Three doctors working in St. Louis area were surveyed concering their opinions of health…

A: Population: Population is the set of all values in the set of data. Sample: A sample is a set of…

Q: Categorical binary , categorical ,  or quantataive

A: The objective of the question is to identify the types of variables that best describe the given…

Q: can you explain in 800 words, the application of work sampling in healthcare?

A: The application of work sampling is used to calculate the proportion of time spents by workers  also…

Q: A quality-conscious disk manufacturer wishes to knoww the fraction of disks his company makes which…

A: Given, The no. of sample, n =5431 The number of defective, x = 4943

Q: The instructor takes her sample by gathering data on five randomly selected students from each Lake…

A: One of the types of probability sampling is called simple random sampling, or SRS, in which every…

Q: Ms. Scott, the principal of Phoenix High School, was conducting a survey about student's impressions…

A: Cluster sampling: Cluster sampling is defined as a method of sampling in which, at first, the entire…

Q: Using the data, estimate the proportion of this that are defective.

A: Here given A quality conscious disc manufacturer wishes to know the fraction of disks his company…

Q: Explain the sample mean of the difference scores varies.

A:

Q: What is the difference between the sample mean and sample proportion in statistics? How about…

A: -> The sample mean and sample proportion, these both come under descriptive statistics that…

Q: In a few sentences, describe what the sampling distribution of the mean represents in your own words

A: The sampling distribution of the sample mean can be defined as the probability distribution of the…

Q: A researcher is conducting an investigation regarding the factors affecting the performance of 200…

A: Given Information: Number of teachers in the province of Cavite is 200 Margin of error is 3% i.e.,…

Q: recent poll reports that between 53% and 59% of voters will vote for president george in the next…

A: The confidence interval is (53%, 59%).

Q: A company wants to determine the frequency of the occurrence of invoice errors. Suppose that in a…

A:

Q: A group of researchers want to investigate the academic performance of the college students in…

A: Given that, N = 12000 Margin of error (e) = 0.05 The formula for calculating the sample size is,

Q: The Bangor Humane Society tracks cat adoptions closely. They sample 54 people who looked at cats…

A: Sample proportion = x/n Here x = 36 and n = 54

Q: our population? W

A: A population is a total group included in the survey. A sample is a specific group from which data…

Q: Rangers tagged and released 250 small mouth bass into a Round Lake. A month later, fishermen on the…

A: Given that 250 small mouth bass are tagged and released in lake. A month later a sample of 50 mouth…

Q: Explain Odds-Ratio Analysis?

A: Odds-Ratio Analysis Odss=Probability of a eventProbability of non event

Q: Wageweb conducts surveys of salary data and presents summaries on its Web site. Based on salary data…

A: Disclaimer: Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: Show how you would use systematic sampling to select 100 samples of sale orders from an ordered file…

A: Systematic sampling: When the population units occur in a sequence or pattern and a sample of size n…