Question

. 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 of adults who think that the future health of Social Security is a major economic concern. c. What sample size would you recommend if the consumer research centers’ goal is to estimate the current proportion of individuals think that the future health of Social Security is a major economic concern with a margin of error of 0.04? Use a 98% confidence level.

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%...

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...

In the spring of 2017, the Consumer Reports National Research
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(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
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(b)...

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...

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a survey of 2485 adults, 1875 reported that emails are easy to
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Construct a 95% confidence interval estimate for the population
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Construct a 95% confidence interval estimate for the
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According to a Pew Research Center nationwide telephone survey
of American adults conducted by phone between March 15 and April
24, 2011, 75% of adults said that college education has become too
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In a recent household telephone survey of 2,870 adults in a
certain? country, 28?% reported that they own at least one gun. The
researchers want to estimate the true percentage of adults in that
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a through f below.
a. Identify the population of interest to the
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A.The set of adults that responded to the survey
B.The set of guns in the country
C.The set of...

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