Business Analytics (2nd Edition)
2nd Edition
ISBN: 9780321997821
Author: James R. Evans
Publisher: PEARSON
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Chapter 5, Problem 26PE
The Excel file Call Center Data shows that in a sample of 70 individuals, 27 had prior call center experience. If we assume that the
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Chapter 5 Solutions
Business Analytics (2nd Edition)
Ch. 5 - Lauren drinks a vanety of soft dnnks. Over the...Ch. 5 - Consider the experiment of drawing two cards...Ch. 5 - Three coins are dropped on a table. List all...Ch. 5 - A market research company surveyed consumers to...Ch. 5 - Prob. 5PECh. 5 - Prob. 6PECh. 5 - Prob. 7PECh. 5 - Prob. 8PECh. 5 - Prob. 9PECh. 5 - A survey of 200 college graduates who have been...
Ch. 5 - Prob. 11PECh. 5 - A survey of shopping habits found the percentage...Ch. 5 - Prob. 13PECh. 5 - Prob. 14PECh. 5 - Use the Civilian Labor Force data in the Excel...Ch. 5 - Prob. 16PECh. 5 - A home pregnancy test is not always accurate....Ch. 5 - In the scenario in Problem 2, what is the...Ch. 5 - In the roulette example described in Problem 7,...Ch. 5 - Prob. 20PECh. 5 - Prob. 21PECh. 5 - Prob. 22PECh. 5 - Prob. 23PECh. 5 - Based on the data in the Excel file Consumer...Ch. 5 - Prob. 25PECh. 5 - The Excel file Call Center Data shows that in a...Ch. 5 - If a cell phone company conducted a telemarketing...Ch. 5 - A popular resort hotel has 300 rooms and is...Ch. 5 - A telephone call center where people place...Ch. 5 - Prob. 31PECh. 5 - Prob. 32PECh. 5 - Prob. 33PECh. 5 - Prob. 34PECh. 5 - Prob. 35PECh. 5 - In determining automobile-mileage ratings, it was...Ch. 5 - Prob. 37PECh. 5 - Prob. 38PECh. 5 - A supplier contract calls for a key dimension of a...Ch. 5 - Historical data show that customers who download...Ch. 5 - A Iightbulb is warranted to last for 5,000 hours....Ch. 5 - Prob. 42PECh. 5 - Develop a procedure to sample from the probability...Ch. 5 - Prob. 44PECh. 5 - Prob. 45PECh. 5 - Prob. 46PECh. 5 - A formula in financial analysis is:...Ch. 5 - A government agency is putting a large project out...
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- 14. A study was done to test the relationship between breast milk and a child’s subsequentIQ. The researchers analyzed IQ data on 946 children at the age of 7 ½ to 8 years. Themothers of the children in the study had chosen whether to provide their infants withbreast milk. The researchers used the following designations. Group 1: mothersdeclined to provide breast milk; Group 2: mothers had chosen but were unable toprovide breast milk; Group 3: mothers had chosen and were able to provide breast milk.A hypothesis test is to be performed to decide if there is a difference in mean IQ amongthe three groups. Based on the methods studied in this class, what hypothesis test doyou think would fit the best? What would be the null hypothesis and what would be thealternative hypothesis? What are the assumptions for the test, and would you have anyconcerns about these assumptions.arrow_forward7. The National Center for Health Statistics conducts a National Health Interview Surveyevery year. Each year they randomly select U.S. households to interview. In 2020, theysurveyed 37,358 people and found that 3,624 of these people did not have healthinsurance. In 2021, they surveyed 37,989 people and found that 3,495 of these peopledid not have health insurance.At a 5% significance level, did the proportion of people who didn’t have healthinsurance decrease from 2020 to 2021?You need to use a hypothesis test for this, and you need to state your null andalternative hypotheses, your test statistic value, your p-value or critical value, and yourconclusion.arrow_forward3. A woman wants to know what proportion of people in her town have health insurance.She comes up with three sampling ideas, described below. Discuss the pros and cons ofeach in terms of obtaining an unbiased, representative sample.a. She stands outside her local grocery store every evening for a week, from 5-7 pm, andasks every 10th person entering if they have health insurance.b. She throws ten darts at a map of the town and then tries her best to survey all thepeople who live in the houses closest to the darts.c. She posts a survey on her Facebook page and asks all her friends to share her survey.d. She pays for a small ad in the local newspaper in which she poses her question andprovides her email address and phone number and asks people to contact her to withtheir answer.arrow_forward
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