Introduction To Statistics And Data Analysis
6th Edition
ISBN: 9781337793612
Author: PECK, Roxy.
Publisher: Cengage Learning,
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Chapter 13.1, Problem 10E
Hormone replacement therapy (HRT) is thought to increase the risk of breast cancer. The accompanying data on
x = Percent of women using HRT
and
y = Breast cancer incidence (cases per 100,000 women) for a region in Germany for 5 years appeared in the paper “Decline in Breast Cancer Incidence after Decrease in Utilisation of Hormone Replacement Therapy” (Epidemiology [2008]: 427–430). The authors of the paper used a simple linear regression model to describe the relationship between HRT use and breast cancer incidence.
- a. What is the equation of the estimated regression line?
- b. What is the estimated average change in breast cancer incidence associated with a 1 percentage point increase in HRT use?
- c. What breast cancer incidence would be predicted in a year when HRT use was 40%?
- d. Should this regression model be used to predict breast cancer incidence for a year when HRT use was 20%? Explain.
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Chapter 13 Solutions
Introduction To Statistics And Data Analysis
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