Introduction To Statistics And Data Analysis
6th Edition
ISBN: 9781337793612
Author: PECK, Roxy.
Publisher: Cengage Learning,
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Chapter 15.2, Problem 17E
a.
To determine
Interpret the given underscoring pattern.
b.
To determine
Explain the difference between the response of men and women.
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A researcher is interested in testing the relationship between smoking and BMI (kg/m2) in adults aged 30-45. In order to test this association, the researcher divides smoking into currently more than a pack a day, currently less than a pack a day, and never smokers. The following table represents the BMIs for each participant enrolled by their respective smoking category.
Current Smoker (≥1pack/day)
Current Smoker (<1 pack/day
Never Smoked
26.7
29.4
22.1
29.4
28.6
30.4
24.3
27.4
21.3
28.4
23.2
26.4
21.6
20.1
19.7
27.4
20.6
19.8
26.8
19.7
21.6
36.4
19.6
22.3
31.5
21.6
24.3
27.4
21.5
*Continue as though all assumptions for ANOVA are met.
A) Calculate the MSW and MSB for the data represented above.
B) Carry out a formal test for a one-way analysis of variance among the groups and interpret your results.
Pet Owners A study of pet owners showed the following information concerning the ownership of the dogs and cats. At
=α0.10
, is there a relationship between the number of people in a family and dog or cat ownership? Use the critical value method with tables.
1
person
2
people
3
people
4
or more people
Dog
5
15
10
25
Cat
10
15
15
15
1)State the hypotheses and identify the claim.
H0: Pet ownership is ▼(DEPENDANT ON or INDEPENDANT OF?) the number of people living in the household. (CLAIM OR NOT CLAIM?)
H1
: Pet ownership is (DEPENDANT ON or INDEPENDANT OF?) the number of people living in the household. (CLAIM OR NOT CLAIM?)
2. Find the critical value
3. Compute the test value: X^2=
4. Reject or Do not reject the null hypothesis
5. Summarize: Is there or is there not enough evidence to reject the claim?Is there or is there not enough evidence to support the claim?
You also conducted a review of the research literature and found that similar studies examining the relationship between alcohol consumption and liver cancer found the following:
Smithson et al. RR 3.3 (95% CI:1.95-5.20)
Ribera et al. RR 2.1 (95% CI:1.17-3.33)
Gonzalez et al. RR 2.75 (95% CI 2.26-3.45)
Which one of Hill’s criteria does this illustrate? Explain.
Chapter 15 Solutions
Introduction To Statistics And Data Analysis
Ch. 15.1 - Give as much information as you can about the...Ch. 15.1 - Prob. 2ECh. 15.1 - Employees of a state university system can choose...Ch. 15.1 - The accompanying summary statistics for a measure...Ch. 15.1 - The authors of the paper Age and Violent Content...Ch. 15.1 - The paper referenced in the previous exercise also...Ch. 15.1 - Do people feel hungrier after sampling a healthy...Ch. 15.1 - Prob. 8ECh. 15.1 - The Paper Womens and Mens Eating Behavior...Ch. 15.1 - Can use of an online plagiarism-detection system...
Ch. 15.1 - Prob. 11ECh. 15.1 - In the introduction to this chapter, we considered...Ch. 15.1 - In an experiment to investigate the performance of...Ch. 15.2 - Leaf surface area is an important variable in...Ch. 15.2 - Prob. 15ECh. 15.2 - Prob. 16ECh. 15.2 - Prob. 17ECh. 15.2 - The paper referenced in Exercise 15.5 described an...Ch. 15.2 - Prob. 19ECh. 15.2 - The accompanying data resulted from a flammability...Ch. 15.2 - Do lizards play a role in spreading plant seeds?...Ch. 15.2 - Samples of six different brands of diet or...Ch. 15.3 - A particular county employs three assessors who...Ch. 15.3 - The accompanying display is a partially completed...Ch. 15.3 - With the use of biofuels increasing, investigators...Ch. 15.3 - Prob. 26ECh. 15.3 - Prob. 27ECh. 15.3 - Prob. 28ECh. 15.4 - Prob. 29ECh. 15.4 - The paper Feedback Enhances the Positive Effects...Ch. 15.4 - The following graphs appear in the paper Which...Ch. 15.4 - The behavior of undergraduate students when...Ch. 15.4 - Prob. 33ECh. 15.4 - The following partially completed ANOVA table...Ch. 15.4 - Prob. 35ECh. 15.4 - The accompanying ANOVA table is similar to one...Ch. 15.4 - Identification of sex in human skeletons is an...Ch. 15 - Suppose that a random sample or size n = 5 was...Ch. 15 - Parents are frequently concerned when their child...Ch. 15 - Prob. 40CRCh. 15 - Consider the accompanying data on plant growth...Ch. 15 - Prob. 42CRCh. 15 - Prob. 43CRCh. 15 - Prob. 44CRCh. 15 - Prob. 45CRCh. 15 - Prob. 46CRCh. 15 - Prob. 47CRCh. 15 - Prob. 48CRCh. 15 - Prob. 49CR
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