Introduction to Statistics and Data Analysis
5th Edition
ISBN: 9781305445963
Author: PECK
Publisher: Cengage
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Chapter 12.2, Problem 27E
To determine
Test whether there is any association between whether or not children are overweight after one year and the number of sweet drinks consumed at the 0.05 significance level.
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A particular paper described a study of children who were underweight or normal weight at age 2. Children in the sample were classified according to the number of sweet drinks consumed per day and whether or not the child was overweight one year after the study began. Is there evidence of an association between whether or not children are overweight after one
year and the number of sweet drinks consumed? Assume that it is reasonable to regard the sample of children in this study as representative of 2 to 3 years old children and then test the appropriate hypotheses using a .05 significance level. (Round your answer to two decimal places.)
Number of Sweet Overweight?
Drinks Consumed
per Day
Yes
No
22
930
1
73
2071
2
56
1681
3 or More
102
3389
x2 = |
P-value interval
Op< 0.001
O 0.001 s p < 0.01
O 0.01 sp < 0.05
O 0.05 sp < 0.10
Op2 0.10
There is --Select---
v to conclude that there is an association between whether or not children are overweight after one year and the number of sweet…
4.46 Unemployment and relationship problems: A USA Today/Gallup poll conducted between 2010 and 2011 asked a group of unemployed and underemployed Americans if they have had major problems in their relationships with their spouse or another close family member as a result of not having a job (if unemployed) or not having a full-time job (if underemployed). 27% of the 1,145 unemployed respondents and 25% of the 675 underemployed respondents said they had major problems in relationships as a result of their employment status.(a) What are the hypotheses for evaluating if the proportions of unemployed and underemployed people who had relationship problems were different?
(. )Ho: punemployed = punderemployed
Ha: punemployed ≠ punderemployed
(. )Ho: punemployed = punderemployed Ha: punemployed > punderemployed
(. )Ho: punemployed = punderemployed Ha: punemployed < punderemployed
(b) The p-value for this hypothesis…
Wilens and colleagues (2008) studied the association between bipolar disorder and substance abuse. In their study, they reported a 95% CI that “bipolar disorder was associated with an age-adjusted risk for… alcohol abuse (7.66 [2.20, 26.70), drug abuse (18.5 [2.46, 139.10]), dependence (12.1 [ 1.54, 95.50]…and cigarette smoking (12.3[2.83, 53.69])” (p. 188).
Which risk factor was associated with the least variability?
Which risk factor was associated with the most variability?
Chapter 12 Solutions
Introduction to Statistics and Data Analysis
Ch. 12.1 - A particular cell phone case is available in a...Ch. 12.1 - From the given information in each case below, use...Ch. 12.1 - Prob. 3ECh. 12.1 - The article “In Bronx, Hitting Home Runs Is A...Ch. 12.1 - Prob. 5ECh. 12.1 - The paper Sociochemosensory and Emotional...Ch. 12.1 - Prob. 7ECh. 12.1 - Prob. 8ECh. 12.1 - The report “Fatality Facts 2004: Bicycles”...Ch. 12.1 - Prob. 10E
Ch. 12.1 - Prob. 11ECh. 12.1 - A certain genetic characteristic of a particulai...Ch. 12.1 - Prob. 13ECh. 12.2 - A particular state university system has six...Ch. 12.2 - A random sample of 1000 registered voters in a...Ch. 12.2 - Prob. 16ECh. 12.2 - Prob. 17ECh. 12.2 - Prob. 18ECh. 12.2 - Prob. 19ECh. 12.2 - Prob. 20ECh. 12.2 - Prob. 21ECh. 12.2 - Prob. 22ECh. 12.2 - Prob. 23ECh. 12.2 - Prob. 24ECh. 12.2 - Prob. 25ECh. 12.2 - Prob. 26ECh. 12.2 - Prob. 27ECh. 12.2 - Prob. 28ECh. 12.3 - Prob. 29ECh. 12.3 - Prob. 30ECh. 12.3 - Can people tell the difference between a female...Ch. 12.3 - The following passage is from the paper Gender...Ch. 12.3 - The article titled Nap Time...Ch. 12.3 - Using data from a national survey, the authors of...Ch. 12 - Each observation in a random sample of 100 bicycle...Ch. 12 - The color vision of birds plays a role in their...Ch. 12 - Prob. 37CRCh. 12 - Prob. 38CRCh. 12 - Prob. 39CRCh. 12 - Prob. 40CRCh. 12 - Prob. 41CRCh. 12 - Prob. 42CRCh. 12 - Prob. 43CRCh. 12 - Prob. 44CR
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