n a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed...
n a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to
24682468
subjects randomly selected from an online group involved with ears.
10101010
surveys were returned. Construct a
9595%
confidence interval for the proportion of returned surveys.
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a) Find the best point estimate of the population proportion p.
nothing
(Round to three decimal places as needed.)
b) Identify the value of the margin of error E.
Eequals=nothing
(Round to three decimal places as needed.)
c) Construct the confidence interval.
nothingless than p less than<p<nothing
(Round to three decimal places as needed.)
d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below.
A.
9595%
of sample proportions will fall between the lower bound and the upper bound.
B.One has
9595%
confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion.
C.There is a
9595%
chance that the true value of the population proportion will fall between the lower bound and the upper bound.
D.One has
9595%
confidence that the sample proportion is equal to the population proportion.
Homework Answers
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