10.27 Party and Right Direction (Example 40) Suppose a polling organization asks a random sample of people if they are Democrat, Republican, or Other and asks them if they think the country is headed in the right direction or the wrong direction. If we wanted to test whether party affiliation and answer to the question were associated, would this be a test of homogeneity or a test of independence? Explain.

ENGR.ECONOMIC ANALYSIS
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Section 10.3
10.27
10.28
Homework 6
10.29
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Chapter 10: Section Exercises
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Party and Right Direction (Example 4) Suppose a polling organization asks a random
sample of people if they are Democrat, Republican, or Other and asks them if they think
the country is headed the right direction or the wrong direction. If we wanted to test
whether party affiliation and answer to the question were associated, would this be a
test of homogeneity or a test of independence? Explain.
Antibiotic or Placebo large number of surgery patients get infections after surgery,
which can sometimes be quite serious. Researchers randomly assigned some surgery
patients to receive a simple antibiotic ointment after surgery, others to receive a placebo,
and others to receive just cleansing with soap. If we wanted to test the association
between treatment and whether patients get an infection after surgery, would this be a
test of homogeneity or of independence? Explain.
(Source: Hospitals Could Stop Infections by Tackling Bacteria Patients Bring In, Study Finds, New York Times, January 6, 2010.)
Relevant Education (Example 50) A 2018 Gallup poll asked college graduates if they
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Transcribed Image Text:ew History Bookmarks Profiles Tab Window Help - Enroll today x Dashboard 545 Section 10.3 10.27 10.28 Homework 6 10.29 X P SECTION 10.3 .com/products/adec55de-25be-4331-9403-abf9e2add3f5/pages/aed88964fc66e0fcfe7fe29f8c58cda435b07c9b9?location=%7B"id"%3A"... ✩✩ Chapter 10: Section Exercises X 545 $ + Party and Right Direction (Example 4) Suppose a polling organization asks a random sample of people if they are Democrat, Republican, or Other and asks them if they think the country is headed the right direction or the wrong direction. If we wanted to test whether party affiliation and answer to the question were associated, would this be a test of homogeneity or a test of independence? Explain. Antibiotic or Placebo large number of surgery patients get infections after surgery, which can sometimes be quite serious. Researchers randomly assigned some surgery patients to receive a simple antibiotic ointment after surgery, others to receive a placebo, and others to receive just cleansing with soap. If we wanted to test the association between treatment and whether patients get an infection after surgery, would this be a test of homogeneity or of independence? Explain. (Source: Hospitals Could Stop Infections by Tackling Bacteria Patients Bring In, Study Finds, New York Times, January 6, 2010.) Relevant Education (Example 50) A 2018 Gallup poll asked college graduates if they ☎ Q 99 G Fri A
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