STATS:DATA+MODELS-W/DVD
4th Edition
ISBN: 9780321986498
Author: DeVeaux
Publisher: PEARSON
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Chapter 11, Problem 21E
a.
To determine
Identify the population of interest for the given study.
b.
To determine
Identify the population parameter for the given study.
c.
To determine
Find the sampling frame for the given study.
d.
To determine
Identify the sample of the given study.
e.
To determine
Identify the sampling method including the information of randomization.
f.
To determine
Identify the people or individuals who were left out of the study.
g.
To determine
Identify the problem in the proposed survey design.
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a. Fit a straight-line regression model to the data and perform the standard
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One estimate of the proportion of children with autism in the United States is 1 in 100 (Source: http://www.cbsnews.com/stories/2009/10/05/health/main5363192.shtml). Suppose you are interested in the rate of autism among current school-aged children in Utah. You collect a sample of 400 children between the ages of 5 and 18 and find that three have had a previous diagnosis of an autism disorder. You plan to calculate a 95% confidence interval estimator of the proportion of school-aged children in Utah who have ever had a diagnosis of an autism disorder.
Which of the following is the most likely reason you would use a Wilson estimator to calculate the confidence interval estimator?
It is uncomfortable to define having been diagnosed with autism as a success.
It is possible that if even the actual proportion in Utah is 1%, your sample may only have very few children who have had a previous diagnosis of an autism disorder.
It is an easier way to calculate the confidence…
Problem 2-6. Need help on why its 1.22
Chapter 11 Solutions
STATS:DATA+MODELS-W/DVD
Ch. 11.2 - 1. Various claims are often made for surveys. Why...Ch. 11.4 - 2. We need to survey a random sample of the 300...Ch. 11 - Prob. 1ECh. 11 - 2. Satisfied workers The managers of a large...Ch. 11 - Prob. 3ECh. 11 - Prob. 4ECh. 11 - Prob. 5ECh. 11 - 6. Sampling satisfaction A company hoping to...Ch. 11 - Prob. 7ECh. 11 - 8. Satisfactory satisfaction samples For each...
Ch. 11 - Prob. 9ECh. 11 - 10. Happy employees The company plans to have the...Ch. 11 - Prob. 11ECh. 11 - 12. Surveying employees The company of Exercise 2...Ch. 11 - Prob. 13ECh. 11 - 14. Student center survey For their class project,...Ch. 11 - Prob. 15ECh. 11 - Prob. 16ECh. 11 - Prob. 17ECh. 11 - Prob. 18ECh. 11 - Prob. 19ECh. 11 - Prob. 20ECh. 11 - Prob. 21ECh. 11 - In Exercises 17 to 23, for the reports about...Ch. 11 - Prob. 23ECh. 11 - 24. Mistaken poll A local TV station conducted a...Ch. 11 - Prob. 25ECh. 11 - 26. Parent opinion, part 1 In a large city school...Ch. 11 - Prob. 27ECh. 11 - 28. Churches For your political science class,...Ch. 11 - 29. Playground Some people have been complaining...Ch. 11 - 30. Roller coasters An amusement park has opened a...Ch. 11 - 31. Playground, act two The survey described in...Ch. 11 - 32. Wording the survey Two members of the PTA...Ch. 11 - 33. Banning ephedra An online poll on a website...Ch. 11 - 34. Survey questions Examine each of the following...Ch. 11 - Prob. 35ECh. 11 - 36. Phone surveys Any time we conduct a survey, we...Ch. 11 - 37. Cell phone survey What about drawing a random...Ch. 11 - 39. Fuel economy Occasionally, when I fill my car...Ch. 11 - 40. Accounting Between quarterly audits, a company...Ch. 11 - 41. Happy workers? A manufacturing company employs...Ch. 11 - 42. Quality control Sammy’s Salsa, a small local...Ch. 11 - 43. A fish story Concerned about reports of...Ch. 11 - 45. Sampling methods Consider each of these...Ch. 11 - 46. More sampling methods Consider each of these...
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