INTRODUCTORY STAT. W/MYLAB MATH>CUSTOM<
3rd Edition
ISBN: 9780135231548
Author: Gould
Publisher: PEARSON C
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Chapter 10, Problem 55SE
Peanut Allergies In a 2015 study reported in the New England Journal of Medicine, Du Toit et al. randomly assigned infants who were likely to develop a peanut allergy (as measured by having eczema, egg allergies, or both) to either consume or avoid peanuts until 60 months of age. The infants in this cohort did not previously show any preexisting sensitivity to peanut extract. The numbers in each group developing a peanut allergy by 60 months of age are shown in the following table.
a. Compare the percentages in each group that developed a peanut allergy by age 60 months.
b. Test the hypothesis that treatment group and peanut allergy are associated using the chi-square statistic. Use a significance level of
c. Do a Fisher’s Exact Test for the data with the same significance level. Report the two-tailed
d. Compare the
c. Which is more accurate? Explain.
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A psychology researcher conducted a Chi-Square Test of Independence to examine whether there is a relationship between college students’ year in school (Freshman, Sophomore, Junior, Senior) and their preferred coping strategy for academic stress (Problem-Focused, Emotion-Focused, Avoidance). The test yielded the following result:
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Interpret the results of this analysis. In your response, clearly explain:
Whether the result is statistically significant and why.
What this means about the relationship between year in school and coping strategy.
What the researcher should conclude based on these findings.
Chapter 10 Solutions
INTRODUCTORY STAT. W/MYLAB MATH>CUSTOM<
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