Stan is working on a class project for which he must interview ten of his classmates. He places the names of everyone in his class into a hat and selects 10 names. What kind of sampling is this? o systematic sampling multi-stage sampling o simple random sample convenience sampling

Stan is working on a class project for which he must interview ten of his classmates. He places the names of everyone in his class into a hat and selects 10 names. What kind of sampling is this? o systematic sampling multi-stage sampling o simple random sample convenience sampling

Essentials of Business Analytics (MindTap Course List)

2nd Edition

ISBN:9781305627734

Author:Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson

Publisher:Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson

Chapter6: Statistical Inference

Section: Chapter Questions

Problem 7P: The College Board reported the following mean scores for the three parts of the SAT: Assume that...

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The College Board reported the following mean scores for the three parts of the SAT: Assume that the population standard deviation on each part of the test is = 100. For a random sample of 30 test takers, what is the sampling distribution of for scores on the Critical Reading part of the test? For a random sample of 60 test takers, what is the sampling distribution of for scores on the Mathematics part of the test? For a random sample of 90 test takers, what is the sampling distribution of for scores on the Writing part of the test?
Imagine that for a study, data is to be collected from a population size of 9000 items. The population is divided into strata of size 2700, 1800 and 4500 respectively. The required sample size is 100. The number of items that is selected from the strata to form sample is: a. 30, 16 and 54 b. 30, 20 and 50 c. 29, 21 and 50 d. 30, 19 and 51 fast plz i dont have time
Sample Evaluation. Gloria Bush has performed a sampling plan to estimate the numberof children per household in her neighborhood. In doing so, she established a 10 percentacceptable level of sampling risk and found a sample estimate of 2.5 children per household.Based on the acceptable level of sampling risk, she calculated a precision of 0.7 children perhousehold.Required:a. Define the terms precision and reliability. How are these terms related?b. What is the precision interval in this example? What statement can Bush make based onher sample evidence?c. Assume that she desires a lower sampling risk (5 percent). How will this affect the precision interval?d. If she is interested in knowing whether the number of children per household exceeds1.5 children, how would you advise her based on the following outcomes? In all cases,assume that the sample estimate is 2.5 children per household.1. Reliability = 90 percent; precision = 0.7 children per household.2. Reliability = 95 percent;…
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Discovery and Sequential Attributes Sampling. Sydney Siebenthaler, the audit managerfor Jennifer’s Running Shirts Inc., has just returned from a continuing education class onaudit sampling and now wants to use discovery sampling or sequential sampling on the Jennifer’s audit because the class instructor said that the sample sizes would be significantlysmaller. “Talk about a no-brainer!” Siebenthaler exulted.Jennifer’s has good controls, and the audit team has performed tests of controls over thepayroll procedures in previous years to reduce substantive tests of payroll accounts to onlyanalytical procedures. In the previous year, the audit team used the following parameters:risk of overreliance, 10 percent; expected population deviation rate, 2 percent; and tolerablerate of deviation, 10 percent, which resulted in a sample size of 38. The auditors increased(rounded) the sample size to 40 items, and one deviation was found. The resulting ULRDrate was 9.4 percent, and the control was…
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People end up tossing 12% of what they buy at the grocery store. Assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. Show the sampling distribution of , the proportion of groceries thrown out by your sample respondents.
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Which kind of sampling plan was used in each of the following situation? Would the plan result in an unbiased sample? - the manager of large shopping mall are trying to decide whether to add another information booth to the concourse. They hire a student to stand by one door and ask the next 100 people who enter the mall wether they would like to see another information booth added to the mall and If so where?
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