Question
In: Statistics and Probability
A poll done for an organization found that 13% of Americans have seen or sensed the...
A poll done for an organization found that 13% of Americans have
seen or sensed the presence of an angel. A contingent doubts that
the percent is really that high. It conducts its own survey. Out of
78 Americans surveyed, only two had seen or sensed the presence of
an angel. As a result of the contingent's survey, would you agree
with the organization's poll? Conduct a hypothesis test at the 5%
level.
Note: If you are using a Student's t-distribution for the
problem, you may assume that the underlying population is normally
distributed. (In general, you must first prove that assumption,
though.)
1. State the distribution to use for the test. (Enter your answer in the form z or tdf where df is the degrees of freedom.)
2. Construct a 95% confidence interval for the true proportion. Sketch the graph of the situation. Label the point estimate and the lower and upper bounds of the confidence interval. (Keep in mind that a negative value wouldn't be practical in this situation. Round your answers to four decimal places.)
Solutions
orchestra answered 1 year agoRelated Solutions
A poll done for Newsweek found that 13% of Americans have seen or sensed the presence...
A poll done for Newsweek found that 13% of Americans
have seen or sensed the presence of an angel. A contingent doubts
that the percent is really that high. It conducts it's own survey.
Out of 125 Americans surveyed, only 10 had seen or sensed the
presence of an angel. As a result of the contingent's survey, at a
5% level of significance, would you agree with the Newsweek
poll?
In your answer, shoe your hypothesis, your calculated
z or...
A poll done for Newsweek found that 13% of Americans have seen or sensed the presence...
A poll done for Newsweek found that 13% of Americans have seen
or sensed the presence of an angel. A contingent doubts that the
percent is really that high. It conducts its own survey. Out of 76
Americans surveyed, only two had seen or sensed the presence of an
angel. As a result of the contingent’s survey, would you agree with
the Newsweek poll? Use a 1% percent level of significance to test
the claim of the contingent.
a)
State...
1) In a recent poll, the Gallup organization found that 45% of adult Americans believe that...
1) In a recent poll, the Gallup organization found that 45% of
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their feelings on the overall state of moral values in the United
States. Answer the questions below, showing work. Bare answers are
not acceptable. (Showing work means writing the calculator command
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1) In a recent poll, the Gallup organization found that 45% of adult Americans believe that...
1) In a recent poll, the Gallup organization found that 45% of
adult Americans believe that the overall state of moral values in
the United States is poor. Suppose a survey of a random sample of
25 adult Americans is conducted in which they are asked to disclose
their feelings on the overall state of moral values in the United
States. Answer the questions below, showing work. Bare answers are
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A Gallup poll found that 493 of 1050 adult Americans believe it
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Please Answer the following regarding probability: 6. A 2011 Gallup poll found that 76% of Americans...
Please Answer the following regarding probability:
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a) Find a 90% confidence interval for the proportion of
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Please show all work.
Please typed answers only, no handwriting.
Problem 1: Healthcare for all American A Gallup poll found that 493 of 1050 adult Americans...
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study? Is it qualitative or quantitative? 3. Based on the results
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CI = (, )
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