Question

3)

In a Pew Research Center report from January 2015, 37% of American adults say that genetically modified (GM) foods are 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 3.1% of the population proportion.

We are 95% confident that the sample proportion is off by 3.1%.

We are 95% confident that the population proportion is within 3.1% of the sample proportion of 37%.

Answer #1

Answer: Option (4).

The 100(1-)% of the population proportion is given by, , where is the sample proportion.

It is given that the sample proportion is, 37% and margin of error is 3.1%. In most general terms, for a 95% confidence interval, we say “we are 95% confident that the true population parameter is between the lower and upper calculated values”. Hence here we can say that we are 95% confident that is within 3.1% of .

In 2013, the Pew Research Foundation reported that 45% of U.S.
adults report that they live with one or more chronic conditions".
However, this value was based on a sample, so it may not be a
perfect estimate for the population parameter of interest on its
own. The study reported a standard error of about 1.2%, and a
normal model may reasonably be used in this setting. The 95%
condence interval for the proportion of U.S. adults who live with...

aaocrding to the may 16,2017 report by pew research 68% of us
adults say solar energy is very effective in minimizing air
pollution. a sample of 240 us adults are surveyed..let p be the
sample proportion of americans who believe solar energy is very
effective in minimizing air pollution..what is the population
proportion?, what is the sample size? can the normal approximation
be used with this ddistribution? what is the mean of the sampling
proportion? what is the standard eviation...

3- A recent Gallup poll of a random sample of 1,015 US adults
reported that a 95% confidence interval for the population
proportion of adults who frequently worry about being the victim of
identity theft is (0.32, 0.40).
(a) We are 95% confident that what parameter is contained in
this interval? (Circle your answer.) Can we say that there is a
probability of 95% that this parameter is actually contained in
this interval?
A) sample proportion B) population proportion C)...

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
expensive for most people and they cannot afford it (Time, May 30,
2011). Suppose that this result is true for the 2011 population of
American adults. In a recent poll of 1575 American adults, 1150
said that college education has become too expensive for most
people and they...

The Pew Research Center conducted a survey between November 26,
2014 and January 3, 2015 about privacy strategies.1 In a random
sample of 413 U.S. adults that were aware of government
surveillance programs, 74 said they have changed their use of email
accounts after becoming aware of government surveillance programs.
Results are based on telephone interviews with randomly selected
U.S. adults, aged 18 and older.
Describe the population of interest in words.
Describe the parameter of interest in words.
Describe...

In a pew research center poll of 745 randomly selected adults,
589 said it is morally wrong not to report all income on tax
returns. Use a .01 significance level to test the claim that 75% of
adults say that it is morally wrong not to report all income on the
returns.
Question 3: Which command in stat crunch do you use
here?
A. Z Stats
B. T stats
C. Proportion stats
D. Variance Stats
Question 4: What is the...

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
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...

In a survey of 1000 Canadian adults, 790 say that the energy
situation in Canada is very or fairly serious. 2. Construct a 95%
confidence interval for the population proportion (a) The critical
value: (b) The margin of error: (c) The lower limit of the
interval: (d) The upper limit of the interval: 3. find the minimum
sample size needed to estimate the population proportion at the 99%
confidence level in order to ensure that the estimate is accurate
within...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 17 minutes ago

asked 17 minutes ago

asked 20 minutes ago

asked 35 minutes ago

asked 36 minutes ago

asked 50 minutes ago

asked 50 minutes ago

asked 59 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago