Question

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 respondents think the future health of Social Security is a major economic concern.

What is the point estimate of the population proportion of adults who think the future health of Social Security is a major economics concern? (round to two decimal places) Answer At 90% confidence, what is the margin of error? (round to two decimal places) Answer

Develop a 90% confidence interval for the population proportion of adults who think the future health of Social Security is a major economic problem. (round to two decimal places) [Answer , Answer]

Develop a 95% confidence interval for the population proportion of adults who think the future health of Social Security is a major economic problem. (round to two decimal places) [Answer , Answer]

Answer #1

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...

A 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 1,500 of the respondents think the
future health of Social Security is a major economic concern.
(a)
What is the point estimate of the population proportion of
adults who think the future health of Social Security is a major
economic concern?
(b)
At 90% confidence, what is the margin of error?
(c)
Develop a 90%...

. A certain Consumer Research Center conducted a telephone
survey of 2500 adults to learn about the major economic concerns
for the future. The survey results showed that 1550 of the
respondents think that the future health of Social Security is a
major economic concern. a. What is the point estimate of the
population proportion of adults who think the future health of
Social Security is a major economic concern? b. Develop a 94%
confidence interval for the population proportion...

In the spring of 2017, the Consumer Reports National Research
Center conducted a survey of 1,007 adults to learn about their
major healthcare concerns. The survey results showed that 575 of
the respondents lack confidence they will be able to afford health
insurance in the future.
(a)
What is the point estimate of the population proportion of
adults who lack confidence they will be able to afford health
insurance in the future. (Round your answer to two decimal
places.)
(b)...

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
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...

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...

A national survey of 1,000 adults was conducted by Rasmussen
Reports. It concluded with 95% confidence that 49% to 55% of
Americans believe that big-time college sports programs corrupt the
process of higher education. Part (a) Find the point estimate and
the error bound for this confidence interval. (Enter your answers
to two decimal places.) point estimate error bound Part (b) Can we
(with 95% confidence) conclude that more than half of all American
adults believe this? Yes, because the...

A research agency conducted a survey on randomly selected 2000 Malaysian adults aged 18 and over regarding weight issue. These adults were asked if they want to lose weight and 63% said yes.
i) Construct a 97% confidence interval for the corresponding population proportion.
ii) Find the minimum sample size if the research agency wants to be sure that the margin of error is within 0.04 of the population proportion for a 97% confidence interval. The preliminary estimate for the...

A survey of 2282 adults in a certain large country aged 18 and
older conducted by a reputable polling organization found that 416
have donated blood in the past two years.
Obtain a point estimate for the population proportion of adults
in the country aged 18 and older who have donated blood in the past
two years. (Round to three decimal places as needed.)
Construct and interpret a 90% confidence interval for the
population proportion of adults in the country...

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