Question

In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2353 subjects randomly selected from an online group involved with ears. 965 surveys were returned. Construct a 95% confidence interval for the proportion of returned surveys.

a) Find the best point estimate of the population proportion p.

________?

(Round to three decimal places as needed.)

b) Identify the value of the margin of error E.

E=______?

(Round to three decimal places as needed.)

c) Construct the confidence interval.

______< p < _____?

(Round to three decimal places as needed.)

d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below.

A.One has 95% confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion.

B. 95% of sample proportions will fall between the lower bound and the upper bound.

C.One has 95% confidence that the sample proportion is equal to the population proportion.

D.There is a 95% chance that the true value of the population proportion will fall between the lower bound and the upper bound.

Answer #1

In a study of cell phone use and brain hemispheric dominance,
an Internet survey was e-mailed to 2662
subjects randomly selected from an online group involved with
ears. 1018 surveys were returned. Construct a
99% confidence interval for the proportion of returned
surveys.
a) Find the best point estimate of the population proportion
p.
(Round to three decimal places as needed.)
b) Identify the value of the margin of error E.
(Round to three decimal places as needed.)
c) Construct...

In a study of cell phone use and brain hemispheric dominance,
an Internet survey was e-mailed to 2381 subjects randomly selected
from an online group involved with ears.1144 surveys were returned.
Construct a 95% confidence interval for the proportion of returned
surveys.
c) Construct the confidence interval.
____< p <____
(Round to three decimal places as needed.)

In a study of cell phone use and brain hemispheric dominance,
an Internet survey was e-mailed to 2531 subjects randomly selected
from an online group involved with ears. 1161 surveys were
returned. Construct a 99% confidence interval for the proportion
of returned surveys. LOADING... Click the icon to view a table of z
scores. a) Find the best point estimate of the population
proportion p. nothing

In
a study of cell phone use and brain hemispheric dominance, an
Internet survey was emailed to 2325 subjects randomly selected from
an online group involved with ears. 923 surveys returned. Construct
a 99% confidence interval for the proportion of returned surveys.
Find the best point estimate of the population proportion
p.
Identify the value of the margin of error E.
Construct the confidence interval.

In a study of cell phone usage and brain hemispheric dominance,
an Internet survey was e-mailed to 6955 subjects randomly selected
from an online group involved with ears. There were 1307 surveys
returned. Use a 0.01 significance level to test the claim that the
return rate is less than 20%. Use the P-value method and use the
normal distribution as an approximation to the binomial
distribution.
The test statistic is
z = ____
(Round to two decimal places as needed.)...

Use the sample data and confidence level given below to complete
parts (a) through (d).
A drug is used to help prevent blood clots in certain patients.
In clinical trials, among 4994 patients treated with the drug,
180 developed the adverse reaction of nausea. Construct a 95%
confidence interval for the proportion of adverse reactions.
a) Find the best point estimate of the population
proportion p.
(Round to three decimal places as needed.)
b) Identify the value of the margin...

Use the sample data and confidence level given below to complete
parts (a) through (d).
In a study of cell phone use and brain hemispheric dominance,
an Internet survey was e-mailed to 2620 subjects randomly selected
from an online group involved with ears. 1080
surveys were returned. Construct a 99% confidence interval for
the proportion of returned surveys.
USE Z SCORE TABLE
a) Find the best point estimate of the population proportion p.
_____________ (Round to three decimal places as...

In a study of cell phone usage and brain hemispheric dominance,
an Internet survey was e-mailed to
69726972
subjects randomly selected from an online group involved with
ears. There were
13481348
surveys returned. Use a 0.01 significance level to test the
claim that the return rate is less than 20%. Use the P-value
method and use the normal distribution as an approximation to the
binomial distribution.
Identify the null hypothesis and alternative hypothesis.
A.
Upper H 0H0:
pless than<0.2
Upper...

Use the sample data and confidence level given below to complete
parts (a) through (d).
In a study of cell phone use and brain hemispheric dominance,
an Internet survey was e-mailed to 2480 subjects randomly selected
from an online group involved with ears. 1030 surveys were
returned. Construct a 90% confidence interval for the proportion
of returned surveys.
a) Find the best point estimate of the population
proportion p.
(Round to three decimal places as needed.)
b) Identify the value...

Use the sample data and confidence level given below to complete
parts (a) through (d).
A drug is used to help prevent blood clots in certain patients.
In clinical trials, among
4248
patients treated with the drug,
101
developed the adverse reaction of nausea. Construct a
95% confidence interval for the proportion of adverse
reactions.
a) Find the best point estimate of the population proportion
p.
(Round to three decimal places as needed.)
b) Identify the value of the margin...

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