Question

A survey revealed that 25% of 493 respondents said they had in the past sold unwanted gifts over the internet. Use this information to construct a 95% confidence interval for the population proportion who sold unwanted gifts over the internet, rounding your margin of error to the nearest hundredth. Round your answers 2 decimal places (________,________)

Answer #1

A survey revealed that 25% of 474 respondents said they had in
the past sold unwanted gifts over the internet. Use this
information to construct a 95% confidence interval for the
population proportion who sold unwanted gifts over the internet,
rounding your margin of error to the nearest hundredth. Round your
answers 2 decimal places. (_______,_______)

A survey revealed that 23% percent of 461 respondents said they
had in the past sold unwanted gifts over the Internet. Use this
information to construct a 95% confidence interval for the
population proportion who sold unwanted gifts over the Internet,
rounding your margin of error to the nearest hundredth. (Round your
answers to two decimal places.)

Suppose a survey revealed that 19% of 484 respondents said they
had sold unwanted gifts on the internet in the past. Use the
information to construct a 90% confidence interval for the
population proportion who sold unwanted gifts over the internet,
rounding you margin of error to the nearest hundreth. Round answers
2 decimal places. (_____,______)

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...

A recent survey on marriage trends reported that 4% of the
respondents said single women having children is a "good thing".
The 95% confidence interval is from 2.9% to 5.1%. (n= 1229)
(a) What is the Margin of Error
(b) What does "95% confidence" mean?
(c) If we wanted a 99& confidence interval, would the
interval be wider or smaller than 2.9% to 5.1%

A survey of 1027 random voters in Oregon revealed that 673 favor
the approval of an issue before the state legislature. Construct a
95% confidence interval for the true population proportion of all
voters in the state who favor approval. (Round all answers to two
decimal places unless otherwise specified.)
Does this satisfy the conditions for constructing a confidence
interval?
Select an answer Yes No There's conditions?
Identify ˆpp^ and zα2zα2.
ˆp=p^=
zα2=zα2=
Calculate the margin of error. (Round to...

A research institute poll asked respondents if they felt
vulnerable to identity theft. In the poll, n=946 and 1x=591 who
said "yes." Use a %95% confidence level.
a)
Find the best point estimate of the population proportion p.
b) Identify the value of the margin of error E.
c)Construct the confidence interval.
d)Write a statement that correctly interprets the confidence
interval. Choose the correct answer below.

In a survey of 2300 T.V. viewers, 690 said they watch network
news programs. Find the margin of error for the 95% confidence
interval used to estimate the population proportion.

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