Question
In: Statistics and Probability
According to research, the proportion of those who voted for the Y party is known to...
According to research, the proportion of those who voted for the
Y party is known to be 40%. To this
according to, from 200 people chosen at random;
e) What are the odds that more than 60 will vote for party Y? (5
points)
a) what is the likelihood that fewer than 80 will vote for party Y?
(5 points)
b) What are the chances that between 100 and 150 people will vote
for party Y? (5 points)
c) how many people are more than 30% likely to vote for party Y?
(10 points)
Solutions
orchestra answered 1 year agoRelated Solutions
Suppose it is desired to compare the proportion of male and female students who voted in...
Suppose it is desired to compare the proportion of male and
female students who voted in the last presidential election. We
decide to randomly and independently sample 1000 male and 1000
female students and ask if they voted or not. A printout of the
results is shown below.
Hypothesis Test - Two Proportions
Sample Size Successes Proportion
Males 1000 475 0.47500
Females 1000 525 0.52500
Difference -0.05000
Null Hypothesis: p1 = p2
Alternative Hyp: p1 ≠ p2
SE (difference) 0.02236...
In the 2015 federal election, 39.47% of the electorate voted for the Liberal party, 31.89% for...
In the 2015 federal election, 39.47% of the electorate voted for
the Liberal party, 31.89% for the Conservative party, 19.71% for
the NDP, 4.66% for the Bloc Quebecois, and 3.45% for the Green
party.
(a) A recent poll of 1500 respondents found that 29.3% support
the Conservative party. Test whether this is sufficient evidence to
conclude that the level of support has dropped since the election.
Use the 5% level of significance and show your manual
calculations.
(b) Suppose you...
In the 2015 federal election, 39.5% of the electorate voted for the Liberal party, 31.9% for...
In the 2015 federal election, 39.5% of the electorate voted for
the Liberal party, 31.9% for the Conservative party, 19.7% for the
NDP, 4.7% for the Bloc Quebecois and 3.5% for the Green party.
The most recent pool as of the launch of the 2019 election
campaign shows a tie between the Liberals and the Conservatives at
33.8%. This pool was based on 1185 respondents. (a) Based on this
recent pool, test whether this is sufficient evidence to conclude
that...
In the 2015 federal election, 39.5% of the electorate voted for the Liberal party, 31.9% for...
In the 2015 federal election, 39.5% of the electorate voted for
the Liberal party, 31.9% for the Conservative party, 19.7% for the
NDP, 4.7% for the Bloc Quebecois and 3.5% for the Green party. The
most recent pool as of the launch of the 2019 election campaign
shows a tie between the Liberals and the Conservatives at 33.8%.
This pool was based on 1185 respondents.
(a) Based on this recent pool, test whether this is sufficient
evidence to conclude that...
According to a study, the proportion of people who are satisfied with the way things are...
According to a study, the proportion of people who are satisfied
with the way things are going in their lives is 0.76
Suppose that a random sample of 100 people is obtained. Complete
parts (a) through (e) below.
(a) Suppose the random sample of
100100
people is asked, "Are you satisfied with the way things are
going in your life?" Is the response to this question qualitative
or quantitative? Explain.
A.The response is qualitative because the responses can be
measured...
In this exercise we are interested in comparing the proportion of those who support immigrant policy...
In this exercise we are interested in comparing the proportion
of those who support immigrant policy reform among Hispanics and
non-Hispanics. A poll found that out of 800 Hispanics 77% supported
immigration reform and out of 900 non-Hispanics 64% supported
immigration reform. Test the hypothesis that Hispanics are more
likely to support immigration reform than non-Hispanics at alpha =
0.01.
According to a study conducted by a statistical organization, the proportion of Americans who are satisfied...
According to a study conducted by a statistical organization,
the proportion of Americans who are satisfied with the way things
are going in their lives is 0.66.
Suppose that a random sample of 205 Americans is obtained,
a. About 69% of the samples will contain more than x Americans
who are satisfied with their lives. Find the x.
b. What is the probability that at least 140 Americans in the
sample are satisfied with their lives?
c. What is the...
According to a study conducted by a statistical organization, the proportion of people who are satisfied...
According to a study conducted by a statistical organization,
the proportion of people who are satisfied with the way things are
going in their lives is 0.86. Suppose that a random sample of 100
people is obtained. Complete parts (a) through (e) below.
(a) Suppose the random sample of 100 people is asked, "Are you
satisfied with the way things are going in your life?" Is the
response to this question qualitative or quantitative? Explain. A.
The response is...
According to a study conducted by a statistical organization, the proportion of Americans who are satisfied...
According to a study conducted by a statistical organization,
the proportion of Americans who are satisfied with the way things
are going in their lives is 0.76. Suppose that a random sample of
110 Americans is obtained. Complete parts (a) through (c).
(a) Describe the sampling distribution of p.
(b) Using the distribution from part (a), what is the
probability that at least 80 Americans in the sample are satisfied
with their lives?
(c) Using the distribution from part (a),...
According to a study conducted by a statistical organization, the proportion of people who are satisfied...
According to a study conducted by a statistical organization,
the proportion of people who are satisfied with the way things are
going in their lives is 0.76 . Suppose that a random sample of 100
people is obtained. Complete parts (a) through (e) below.
(a) Suppose the random sample of 100 people is asked, "Are you
satisfied with the way things are going in your life?" Is the
response to this question qualitative or quantitative?
Explain.
A. The response is...
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