Question

A Pew Research Center survey of 4,787 adults found that 4,178 had bought something online. Of these online shoppers, 789 are weekly online shoppers. a. Construct a 95% confidence interval estimate of the population proportion of adults who had bought something online. b. Construct a 95% confidences interval estimate of the population proportion of online shoppers who are weekly online shoppers. c. How would the director of e-commerce sales for a company use the results of (a) and (b)?

Answer #1

thank you

In a Pew Research Center poll of 745 randomly selected adults,
589 said that it is morally wrong to not report all income on tax
returns.
a. Construct a 95% confidence interval estimate of the
percentage of all adults who have that belief, and then write a
statement interpreting the confidence interval.
76.1% - 82%
b. Assume that you must conduct a new poll to determine
the percentage of adults who believe that it is morally wrong to
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A research center conducted a telephone survey of 2,000 adults
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(a)
What is the point estimate of the population proportion of
adults who think the future health of Social Security is a major
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(b)
At 90% confidence, what is the margin of error?
(c)
Develop a 90%...

Online Dating Experiences[1]
The Pew Research Center conducted a
survey in 2019 asking adults about their experiences dating online.
This assignment is based on a random sample of 100 U.S. citizens in
2019 who had dated online. Participants were asked whether or not
they had an overall positive experience with online dating
platforms. Out of the 100 people, 57 said they had an overall
positive experience.
Research Question: For U.S. citizens
who have dated online, is the population proportion who...

3)
In a Pew Research Center report from January 2015, 37% of
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generally safe to eat. The margin of error for the 95% confidence
interval is 3.1%.
What does this margin of error tell you about the results of the
survey?
Group of answer choices
We are confident that the population proportion is within 3.1%
of the sample proportion of 37%.
We are confident that 95% of the responses are within...

The Consumer Reports National Research Center conducted a
telephone survey of 2,000 adults to learn about the major economic
concerns for the future. The survey results showed that 1,640 of
the respondents think the future health of Social Security is a
major economic concern.
If computing the confidence intervals manually, make sure to use
at least three decimal digits for the critical values.
a. What is the point estimate of the population
proportion of adults who think the future health...

1) The Pew Research Center Internet Project conducted a survey
of 907 Internet users. This survey provided a variety of statistics
on them. If required, round your answers to four decimal places.
(a) The sample survey showed that 90% of respondents said the
Internet has been a good thing for them personally. Develop a 95%
confidence interval for the proportion of respondents who say the
Internet has been a good thing for them personally. to (b) The
sample survey showed...

The Pew Research Center Internet Project conducted a survey of
957 Internet users. This survey provided a variety of statistics on
them.
If required, round your answers to four decimal places.
(a)
The sample survey showed that 90% of respondents said the
Internet has been a good thing for them personally. Develop a 95%
confidence interval for the proportion of respondents who say the
Internet has been a good thing for them personally.
____to____
(b)
The sample survey showed that...

The Pew Research Center Internet Project conducted a survey of
857 Internet users. This survey provided a variety of statistics on
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If required, round your answers to four decimal places.
(a)
The sample survey showed that 90% of respondents said the
Internet has been a good thing for them personally. Develop a 95%
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Internet has been a good thing for them personally.
to
(b)
The sample survey showed that...

The Consumer Reports National Research Center conducted a
telephone survey of 2000 adults to learn about the major economic
concerns for the future. The survey results showed that 1760 of the
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economic concern.
What is the point estimate of the population proportion of
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In a survey of 3398 adults, 1487 say they have started paying
bills online in the last year. Construct a 99% confidence interval
for the population proportion. Interpret the results. A 99%
confidence interval for the population proportion is (___,___).
(Round to three decimal places as needed.) Interpret your results.
Choose the correct answer below.
A. With 99% confidence, it can be said that the population
proportion of adults who say they have started paying bills online
in the last...

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