Question
In: Statistics and Probability
12-According to a study conducted by a statistical organization, the proportion of Americans who are satisfied...
12-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,
-About 69% of the samples will contain more than x Americans who are satisfied with their lives. Find the x.
-What is the probability that at least 140 Americans in the sample are satisfied with their lives?
-What is the probability that 157 or fewer Americans in the sample are satisfied with their lives?
-If a random sample of 300 adults to results in 240 or more who are satisfied with their lives, at the 95% confidence level, what conclusion can be made?
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The sample proportion is too high! The sample should come from a population with a higher proportion. |
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The conclusion cannot be determined. |
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The sample proportion is too low! The sample should come from a population with a lower proportion. |
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The evidence is enough to show that the sample is coming from the described population. |
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The evidence is not enough to show that the sample is coming from other population. |
Solutions
orchestra answered 2 years agoRelated Solutions
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 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 0.86. 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 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...
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...
2. According to a Gallup poll conducted in 2008, 78.3% of Americans felt satisfied with the...
2. According to a Gallup poll conducted in 2008, 78.3% of
Americans felt satisfied with the way things were going in their
personal lives. A researcher wonders of the percentage satisfied is
lower today. To find out, the researcher surveys a random sample of
1,173 Americans, and finds that 895 feel satisfied with the way
things are going in their personal lives. The researcher wishes to
test the null hypothesis at a significance level of 0.05. (a)
Conduct a large...
1.The Government is interested in the proportion of people who are either Satisfied or Very Satisfied...
1.The Government is interested in the proportion of people who
are either Satisfied or Very Satisfied with current Government
Change policies. They believe that they have the support of the
majority of American.
You are to conduct a hypothesis test to check their Claim. The
random sample of 400 customers shows that 225 people were either
Satisfied or Very Satisfied with the current Government
policies.
Write down the Null and Alternative hypotheses in both Symbols
and Words for the above...
4. A study was conducted to determine the proportion of people who dream in black and...
4. A study was conducted to determine the proportion of people
who dream in black and white instead of color. Among 322 people
over the age of 55, 75 dream in black and white, and among 281
people under the age of 25, 19 dream in black and white. Use a
0.05 significance level to test the claim that the proportion of
people over 55 who dream in black and white is greater than the
proportion for those under 25....
1) A study was conducted to determine the proportion of people who dream in black and...
1) A study was conducted to determine the proportion of people
who dream in black and white instead of color. Among 323 people
over the age of 55, 66 dream in black and white, and among
281people under the age of 25,15 dream in black and white. Use a
0.05 significance level to test the claim that the proportion of
people over 55 who dream in black and white is greater than the
proportion for those under 25. Complete parts...
A study was conducted to determine the proportion of people who dream in black and white...
A study was conducted to determine the proportion of people who
dream in black and white instead of color. Among 309 people over
the age of 55, 63 dream in black and white, and among 315 people
under the age of 25,13 dream in black and white. Use a 0.01
significance level to test the claim that the proportion of people
over 55 who dream in black and white is greater than the proportion
for those under 25. Complete parts...
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