Political party affiliation is believed to be a very strong
indicator of how voters will vote in Presidential Elections. You
are interested in determining if voter party loyalty has changed
since 1992. During the 1992 election, the proportion of
selfproclaimed Republicans who voted for George H. W. Bush was
0.914. During the 2012 election, in a survey of 358 Republican
voters, 275 indicated that they had voted for Mitt Romney. The 99%
confidence interval for this proportion is ( 0.7107 , 0.8256 ).
What is the best conclusion you can make from this information that
is listed below?
Question 4 options:

1)

We can claim that the proportion of selfproclaimed Republicans
who voted in the 2012 election for their party candidate is larger
than 0.914. 


2)

The proportion of selfproclaimed Republicans who voted for
their party candidate in 2012 who changed from 0.914 is 99%. 


3)

We can not claim that the proportion of selfproclaimed
Republicans who voted in the 2012 election for their party
candidate differs from 0.914. 


4)

We can conclude that the proportion of selfproclaimed
Republicans who voted in the 2012 election for their party
candidate is smaller than 0.914. 


5)

The confidence interval does not provide enough information to
form a conclusion. 

Question 5 (1 point)
A student at a university wants to determine if the proportion
of students that use iPhones is different from 0.45. If the student
conducts a hypothesis test, what will the null and alternative
hypotheses be?
Question 5 options:

1)

H_{O}: p ≤ 0.45
H_{A}: p > 0.45 


2)

H_{O}: p ≠ 0.45
H_{A}: p = 0.45 


3)

H_{O}: p ≥ 0.45
H_{A}: p < 0.45 


4)

H_{O}: p = 0.45
H_{A}: p ≠ 0.45 


5)

H_{O}: p > 0.45
H_{A}: p ≤ 0.45 

Question 6 (1 point)
You hear on the local news that for the city of Kalamazoo, the
proportion of people who support President Obama is 0.58. However,
you think it is different from 0.58. If you conduct a hypothesis
test, what will the null and alternative hypotheses be?
Question 6 options:

1)

H_{O}: p > 0.58
H_{A}: p ≤ 0.58 


2)

H_{O}: p ≥ 0.58
H_{A}: p < 0.58 


3)

H_{O}: p ≠ 0.58
H_{A}: p = 0.58 


4)

H_{O}: p = 0.58
H_{A}: p ≠ 0.58 


5)

H_{O}: p ≤ 0.58
H_{A}: p > 0.58 
