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In a poll conducted by Harris Poll, a random sample of
Chapter 5, Problem 3CT(choose chapter or problem)
In a poll conducted by Harris Poll, a random sample of adult Americans was asked, “How important are moral values when deciding how to vote?” The results of the survey by disclosed political affiliation are shown in the table
(a) Do the sample data suggest that the proportion of adults who feel morality is important differs based on political affiliation? Use the a = 0.05 level of significance.
(b) Construct a conditional distribution of morality by party affiliation and draw a bar graph. What does this summary tell you?
Questions & Answers
QUESTION:
In a poll conducted by Harris Poll, a random sample of adult Americans was asked, “How important are moral values when deciding how to vote?” The results of the survey by disclosed political affiliation are shown in the table
(a) Do the sample data suggest that the proportion of adults who feel morality is important differs based on political affiliation? Use the a = 0.05 level of significance.
(b) Construct a conditional distribution of morality by party affiliation and draw a bar graph. What does this summary tell you?
ANSWER:Step 1 of 3
a) We use the following procedure to test the given hypothesis.
The null hypothesis is the statement of “no difference” so the proportion of adults who feel mortality is important based on political affiliation is equal.
Then the hypothesis
=
=
=
: At Least one of the proportion different from others.
Here ,
,
are proportions independent,republican and democrat respectively.
Let the level of significance =0.05