Question
In: Math
A political poll immediately prior to a local election revealed the following result. Female Voters...
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Please show Excel work:
A. Use α = .05. Test to determine whether the proportions of female and male voters who intend to vote for the Democrat candidate differ? Report the test statistic and the p-value.
B. Provide a 99% confidence interval for the difference in the proportion of female and male voters who intend to vote for the Democrat candidate
Solutions
milcah answered 5 months agoRelated Solutions
A political poll immediately prior to a local election revealed the following result. Female Voters...
A political poll immediately prior to a local election revealed the
following result.
Female Voters
Male voters
Vote Democrat
1200
1150
Vote Republican
2100
950
Total
n1 = 3300
n2 = 2100
Use α = .05. Test to determine whether the proportions of
female and male voters who intend to vote for the Democrat
candidate differ? Report the test statistic and the p-value.
Provide a 99% confidence interval for the difference in the
proportion of female and male...
In a poll of 1000 randomly selected prospective voters in a local election, 281 voters were...
In a poll of 1000 randomly selected prospective voters in a
local election, 281 voters were in favor of a school bond
measure.
a. What is the sample proportion? Type as: #.###
b. What is the margin of error for the 90% confidence level?
Type as: #.###
c. What is the margin of error for the 95% confidence level?
Type as: #.###
d. What is the 95% confidence interval? Type as: [#.###,
#.###]
A poll reported a 36% approval rating...
A political polling organization has been hired to conduct a poll of likely voters prior to...
A political polling organization has been hired to conduct a
poll of likely voters prior to an upcoming election. Each voter is
to be interviewed in person. It is known that the costs of
interviewing different types of voters vary due to the difference
in proportion within the population.
The costs to interview males, for example, are $20 per Democrat,
$18 per Republican, and $27 per Independent voter.
The costs to interview female are $24, $22 and $28 for Democrat,...
M3_A5. A political polling organization has been hired to conduct a poll of likely voters prior...
M3_A5. A political polling organization has been hired to
conduct a poll of likely voters prior to an upcoming election. Each
voter is to be interviewed in person. It is known that he costs of
interviewing different types of voters vary due to the difference
in proportion within the population. The costs to interview males,
for example, are $20 per Democrat, $18 per Republican, and $27 per
Independent voter. The costs to interview female are $24, $22 and
$28 for...
A survey of 750 likely voters in Ohio was conducted by the Rasmussen Poll just prior...
A survey of 750 likely voters in Ohio was conducted by the
Rasmussen Poll just prior to the general election, The state of the
economy was thought to be an important determinant of how people
would vote. Among other things, the survey found that 165 of the
respondents rated the economy as good or excellent, 315 rated the
economy as poor (the rest of the respondents were in between these
two categories).
a. (10p) Develop a point estimate of the...
Prior to the mayoral election discussed in Exercise 33, the newspaper also conducted a poll. The...
Prior to the mayoral election discussed in Exercise 33, the
newspaper also conducted a poll. The paper surveyed a random sample
of registered voters stratified by political party, age, sex, and
area of residence. This poll predicted that Amabo would win the
election with 52% of the vote. The newspaper was wrong: Amabo lost,
getting only 46% of the vote. Do you think the newspaper’s faulty
prediction is more likely to be a result of bias or sampling error?
Explain....
Prior to the mayoral election discussed in Exercise 33, the newspaper also conducted a poll. The...
Prior to the mayoral election discussed in Exercise 33, the
newspaper also conducted a poll. The paper surveyed a random sample
of registered voters stratified by political party, age, sex, and
area of residence. This poll predicted that Amabo would win the
election with 52% of the vote. The newspaper was wrong: Amabo lost,
getting only 46% of the vote. Do you think the newspaper’s faulty
prediction is more likely to be a result of bias or sampling
error?
A political poll asked potential voters if they felt the economy was going to get worse,...
A political poll asked potential voters if they felt the economy
was going to get worse, or better during the next 12 months. The
party affiliations of the respondents were also noted. The results
are shown in the following table. To test at the 0.01 level to
determine if Party Affiliation and Response are dependent,
calculate the chi-square test statistic and p-value.
3).A political poll estimates that 48% of Democrat voters will vote for Elizabeth Warren in the...
3).A political poll estimates that 48% of Democrat
voters will vote for Elizabeth Warren in the presidential
primaries. They provide a "margin of error" of 3 percentage points,
which leads to a 95% confidence interval of 45% to
51%.
a) Explain what "95% confidence level" means.
b) Why is a confidence interval needed here? What does it tell us
that the "48%" does not tell us?
c) Which of the following is the best interpretation of the
confidence interval?
i)...
For a local election the probability of voters favoring the incumbent went from 46% on August...
For a local election the probability of voters favoring the
incumbent went from 46% on August
01 to 52% on September 01 although only 38% favored him in both
polls. What is the probability that a random voter who supported
the incumbent on August
01 is still a supporter on September 01?
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