(a) Explanation Given info: The survey is based on cheating. A sample of size 4,500 was collected. 74% of them told that they had cheated at least once. Calculation: The assumption and conditions for inference: (i) Randomization condition: It can be assumed that the students are selected randomly. (ii) 10% condition: 4,500 students are less than 10% of all students. (iii) Success/failure condition: Here, n p ^ = 4 , 500 × 0.74 = 3 , 330 and n q ^ = 4 , 500 − 3 , 330 = 1 , 170 both are more than 10 (b) To determine Interpret the result. (c) To determine Explain the meaning of 90% confidence. (d) To determine Explain whether the 95% confidence interval will be wider or narrower.

21st Edition

ISBN: 9780137643219

Author: DeVeaux

Publisher: PEARSON

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

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Chapter R, Problem 5.15RE

(a)

To determine

Find the 90% confidence interval for the level of cheating among high school students.

(b)

To determine

Interpret the result.

(c)

To determine

Explain the meaning of 90% confidence.

(d)

To determine

Explain whether the 95% confidence interval will be wider or narrower.

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Chapter R, Problem 5.14RE

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Chapter R Solutions

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Ch. R - Prob. 1.1RE Ch. R - R1.2. Prenatal care Results of a 1996 American...Ch. R - R1.3. Singers by parts The boxplots display the...Ch. R - Prob. 1.4RE Ch. R - Prob. 1.5RE Ch. R - Prob. 1.6RE Ch. R - R1.7. State University Public relations staff...Ch. R - R1.8. Shenandoah rain Based on long-term...Ch. R - Prob. 1.9RE Ch. R - Prob. 1.10RE

Ch. R - Prob. 1.11RE Ch. R - R1.12. e-Books A study by the Pew Internet &...Ch. R - Prob. 1.13RE Ch. R - R1.14. Accidents Progressive Insurance asked...Ch. R - Prob. 1.15RE Ch. R - R1.16. Hard water II The data set from England and...Ch. R - Prob. 1.17RE Ch. R - R1.18. Old Faithful It is a common belief that...Ch. R - R1.19. Old Faithful? Does the duration of an...Ch. R - R1.20. Teen drivers 2013 The National Highway...Ch. R - Prob. 1.21RE Ch. R - Women’s Short Track 2018 The times of skaters in...Ch. R - Prob. 1.23RE Ch. R - R1.24. Sluggers Babe Ruth was the first great...Ch. R - Prob. 1.25RE Ch. R - R1.26. Music and memory Is it a good idea to...Ch. R - Prob. 1.27RE Ch. R - R1.28. Birth order Is your birth order related to...Ch. R - Prob. 1.29RE Ch. R - R1.30. Birth order revisited Consider again the...Ch. R - Prob. 1.31RE Ch. R - R1.32. Engines, again Horsepower is another...Ch. R - R1.33. Age and party 2011 The Pew Research Center...Ch. R - R1.34. Pay According to the Bureau of Labor...Ch. R - Prob. 1.35RE Ch. R - R1.36. Bike safety 2015 The Bicycle Helmet Safety...Ch. R - Prob. 1.37RE Ch. R - Prob. 1.38RE Ch. R - Prob. 1.41RE Ch. R - Prob. 1.42RE Ch. R - R1.43. Student survey investigation The Student...Ch. R - Prob. 1.44RE Ch. R - Prob. 2.1RE Ch. R - Prob. 2.2RE Ch. R - Prob. 2.3RE Ch. R - Prob. 2.4RE Ch. R - Prob. 2.5RE Ch. R - Prob. 2.6RE Ch. R - Prob. 2.7RE Ch. R - Prob. 2.8RE Ch. R - Prob. 2.9RE Ch. R - Prob. 2.10RE Ch. R - Prob. 2.11RE Ch. R - Prob. 2.12RE Ch. R - Prob. 2.13RE Ch. R - Prob. 2.14RE Ch. R - R2.15. Cars, correlations What factor most...Ch. R - R2.16. Cars, associations Look again at the...Ch. R - Prob. 2.17RE Ch. R - Prob. 2.18RE Ch. R - Prob. 2.19RE Ch. R - Prob. 2.20RE Ch. R - Prob. 2.21RE Ch. R - Prob. 2.22RE Ch. R - Prob. 2.23RE Ch. R - Prob. 2.24RE Ch. R - Prob. 2.25RE Ch. R - Prob. 2.26RE Ch. R - Prob. 2.27RE Ch. R - Prob. 2.28RE Ch. R - Prob. 2.29RE Ch. R - Prob. 2.30RE Ch. R - Prob. 2.31RE Ch. R - Prob. 2.32RE Ch. R - Prob. 2.33RE Ch. R - Prob. 2.34RE Ch. R - Prob. 2.35RE Ch. R - Prob. 2.36RE Ch. R - Prob. 2.37RE Ch. R - Prob. 2.38RE Ch. R - Prob. 2.39RE Ch. R - Prob. 2.40RE Ch. R - Prob. 2.41RE Ch. R - Prob. 2.42RE Ch. R - Prob. 2.43RE Ch. R - Prob. 2.44RE Ch. R - Prob. 2.45RE Ch. R - Prob. 2.46RE Ch. R - Prob. 2.47RE Ch. R - Prob. 2.48RE Ch. R - Prob. 2.49RE Ch. R - Prob. 2.50RE Ch. R - Prob. 2.51RE Ch. R - Prob. 2.52RE Ch. R - Prob. 3.1RE Ch. R - Prob. 3.2RE Ch. R - Prob. 3.3RE Ch. R - Prob. 3.4RE Ch. R - Prob. 3.5RE Ch. R - Prob. 3.6RE Ch. R - Prob. 3.7RE Ch. R - Prob. 3.8RE Ch. R - Prob. 3.9RE Ch. R - R3.1–R3.18. What design? Analyze the design of...Ch. R - Prob. 3.11RE Ch. R - Prob. 3.12RE Ch. R - Prob. 3.13RE Ch. R - Prob. 3.14RE Ch. R - Prob. 3.15RE Ch. R - Prob. 3.16RE Ch. R - R3.1–R3.18. What design? Analyze the design of...Ch. R - R3.1–R3.18. What design? Analyze the design of...Ch. R - Prob. 3.19RE Ch. R - Prob. 3.20RE Ch. R - R3.21. Alternate day fasting A paper published in...Ch. R - Prob. 3.22RE Ch. R - Prob. 3.23RE Ch. R - R3.24. Tips, take 2 In another experiment to see...Ch. R - Prob. 3.25RE Ch. R - Prob. 3.26RE Ch. R - Prob. 3.27RE Ch. R - R3.29. Homecoming A college statistics class...Ch. R - Prob. 3.29RE Ch. R - R3.31. Smoking and Alzheimer’s Medical studies...Ch. R - R3.32. Antacids A researcher wants to compare the...Ch. R - Prob. 3.32RE Ch. R - Prob. 3.33RE Ch. R - Prob. 3.34RE Ch. R - Prob. 3.35RE Ch. R - Prob. 3.36RE Ch. R - Prob. 3.37RE Ch. R - Prob. 3.38RE Ch. R - R3.39. Acupuncture Research reported in 2008...Ch. R - R3.40. Fuel efficiency Wayne Collier designed an...Ch. R - Prob. 3.41RE Ch. R - R3.42. Internet speed Carsten, Matt, and Rainer...Ch. R - Prob. 4.1RE Ch. R - Prob. 4.2RE Ch. R - Prob. 4.3RE Ch. R - Bipolar Psychiatrists estimate that about 1 in 100...Ch. R - A game To play a game, you must pay $5 for each...Ch. R - Prob. 4.6RE Ch. R - Prob. 4.7RE Ch. R - Prob. 4.8RE Ch. R - Prob. 4.9RE Ch. R - Prob. 4.10RE Ch. R - Prob. 4.11RE Ch. R - Prob. 4.12RE Ch. R - Prob. 4.13RE Ch. R - Prob. 4.14RE Ch. R - Prob. 4.15RE Ch. R - R4.17. Stocks Since the stock market began in...Ch. R - Multiple choice A multiple choice test has 50...Ch. R - Prob. 4.18RE Ch. R - Prob. 4.19RE Ch. R - Prob. 4.20RE Ch. R - Prob. 4.21RE Ch. R - Prob. 4.22RE Ch. R - Prob. 4.23RE Ch. R - Prob. 4.24RE Ch. R - Prob. 4.25RE Ch. R - Meals A college student on a seven-day meal plan...Ch. R - Prob. 4.27RE Ch. R - Picking melons Two stores sell watermelons. At the...Ch. R - Prob. 4.29RE Ch. R - Prob. 4.30RE Ch. R - Prob. 4.31RE Ch. R - Prob. 4.32RE Ch. R - Prob. 4.33RE Ch. R - Prob. 4.34RE Ch. R - Prob. 4.35RE Ch. R - Prob. 4.36RE Ch. R - Prob. 4.37RE Ch. R - Prob. 4.38RE Ch. R - Prob. 4.39RE Ch. R - Prob. 4.40RE Ch. R - Prob. 4.41RE Ch. R - Prob. 4.42RE Ch. R - Prob. 4.43RE Ch. R - Prob. 4.44RE Ch. R - Prob. 5.1RE Ch. R - Prob. 5.2RE Ch. R - Prob. 5.3RE Ch. R - R4.10. Hamsters How large are hamster litters?...Ch. R - Prob. 5.5RE Ch. R - R4.13. Fake news In a survey of 1002 U.S. adults...Ch. R - Prob. 5.7RE Ch. R - Prob. 5.8RE Ch. R - Prob. 5.9RE Ch. R - Prob. 5.10RE Ch. R - Prob. 5.11RE Ch. R - Prob. 5.12RE Ch. R - Prob. 5.13RE Ch. R - Prob. 5.14RE Ch. R - Prob. 5.15RE Ch. R - R4.27. Language Neurological research has shown...Ch. R - Prob. 5.17RE Ch. R - Prob. 5.18RE Ch. R - Prob. 5.19RE Ch. R - Prob. 5.20RE Ch. R - Prob. 5.21RE Ch. R - Prob. 5.22RE Ch. R - Prob. 5.23RE Ch. R - Prob. 5.24RE Ch. R - Prob. 5.25RE Ch. R - Prob. 5.26RE Ch. R - Prob. 5.27RE Ch. R - Prob. 5.28RE Ch. R - Prob. 5.29RE Ch. R - Prob. 5.30RE Ch. R - Prob. 5.31RE Ch. R - Prob. 5.32RE Ch. R - Prob. 5.33RE Ch. R - Prob. 5.34RE Ch. R - Prob. 5.35RE Ch. R - Prob. 5.36RE Ch. R - Prob. 5.37RE Ch. R - Prob. 5.38RE Ch. R - Prob. 5.39RE Ch. R - Prob. 5.40RE Ch. R - Prob. 6.1RE Ch. R - Prob. 6.2RE Ch. R - Prob. 6.3RE Ch. R - Prob. 6.4RE Ch. R - Prob. 6.5RE Ch. R - Prob. 6.6RE Ch. R - R5.7. Eclampsia deaths Refer again to the research...Ch. R - Prob. 6.8RE Ch. R - Prob. 6.9RE Ch. R - Prob. 6.10RE Ch. R - Prob. 6.11RE Ch. R - Prob. 6.12RE Ch. R - Prob. 6.13RE Ch. R - Prob. 6.14RE Ch. R - Prob. 6.15RE Ch. R - Prob. 6.17RE Ch. R - Prob. 6.18RE Ch. R - Prob. 6.19RE Ch. R - Prob. 6.20RE Ch. R - Prob. 6.21RE Ch. R - Prob. 6.23RE Ch. R - Prob. 6.25RE Ch. R - Prob. 6.28RE Ch. R - Prob. 6.29RE Ch. R - Prob. 6.30RE Ch. R - Prob. 6.31RE Ch. R - Prob. 6.32RE Ch. R - Prob. 6.33RE Ch. R - Prob. 6.34RE Ch. R - Prob. 6.35RE Ch. R - Prob. 6.36RE Ch. R - Prob. 6.37RE Ch. R - R5.38. Age and party 2016 The Pew Research Center...Ch. R - Prob. 6.39RE Ch. R - Prob. 6.40RE Ch. R - Prob. 6.41RE Ch. R - Prob. 6.42RE Ch. R - Prob. 6.43RE Ch. R - Prob. 6.44RE Ch. R - Prob. 6.45RE Ch. R - Prob. 6.46RE Ch. R - Prob. 6.47RE Ch. R - Prob. 6.48RE Ch. R - Prob. 6.49RE Ch. R - R5.50. Cramming Students in two basic Spanish...Ch. R - Prob. 6.51RE Ch. R - Prob. 6.52RE Ch. R - Prob. 7.3RE Ch. R - Prob. 7.4RE Ch. R - Prob. 7.5RE Ch. R - Prob. 7.6RE Ch. R - Prob. 7.7RE Ch. R - Prob. 7.8RE Ch. R - Prob. 7.9RE Ch. R - Prob. 7.10RE Ch. R - Prob. 7.11RE Ch. R - Nuclear plants Here are data on 32 light water...Ch. R - Prob. 7.13RE Ch. R - Prob. 7.15RE Ch. R - Prob. 7.16RE Ch. R - Prob. 7.17RE Ch. R - Prob. 7.18RE Ch. R - Prob. 7.19RE Ch. R - Prob. 7.20RE Ch. R - Prob. 7.21RE Ch. R - Prob. 7.23RE Ch. R - Prob. 7.24RE Ch. R - Prob. 7.25RE Ch. R - Prob. 7.27RE Ch. R - Prob. 7.28RE Ch. R - Prob. 7.29RE

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