Question
In: Statistics and Probability
A simple random sample of 400 individuals provides 148 Yes responses. (a) What is the point...
A simple random sample of 400 individuals provides 148 Yes responses.
(a) What is the point estimate of the proportion of the population that would provide Yes responses? 0.37 Correct: Your answer is correct.
(b) What is your estimate of the standard error of the proportion, σp? _________ (Round your answer to four decimal places.)
(c) Compute the 95% confidence interval for the population proportion. (Round your answers to four decimal places.) ______ to ______?
Solutions
Expert Solution
Solution-
simple random sample of 400 individuals provides 148 Yes responses.
(a) What is the point estimate of the proportion of the population that would provide Yes responses?
0.37 is correct.
Correct: Your answer is correct.
(b) What is your estimate of the standard error of the proportion, σp? _________
0.0241
sigma(p) = sqrt ( (p × q)/n ) = √ ((0.37× 0.63 )/ 400)
(c) Compute the 95% confidence interval for the population proportion is -
0.3228 to 0.4172
----(rounded to 4 decimals)
◆ confidence interval formula and calculation-
calculations are rounded to 3 decimals-
orchestra answered 2 years agoRelated Solutions
A simple random sample of 400 individuals provides 100 Yes responses. a. What is the point...
A simple random sample of 400 individuals provides 100 Yes
responses.
a. What is the point estimate of the proportion of the
population that would provide Yes responses? (to 2 decimals)
later use p-- rounded to 2 decimal places
b. What is your estimate of the standard of error of the
proportion? ( to 4 decimals)
c. Compute the 95% confidence interval for the population
proportion. (to 4 decimals)
MUST INCLUDE:
The knowns
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Box the...
A simple random sample of 700 individuals provides 300 Yes responses. a. What is the point...
A simple random sample
of 700 individuals provides 300 Yes responses.
a. What is the point
estimate of the proportion of the population that would provide Yes
responses (to 3 decimals, if needed)?
b. What is your
estimate of the standard error of the proportion (to 4
decimals)?
c. Compute the 95%
confidence interval for the population proportion (to 3
decimals).
( , )
A simple random sample of 600 individuals provides 100 Yes responses. A). What is the point...
A simple random sample of 600 individuals provides 100 Yes
responses.
A). What is the point estimate of the proportion of the
population that would provide yes responses ( to 3 decimals, if
needed)?
B) What is your estimate of the standard error of the proportion
(to 4 decimals)?
C).Compute the 95% confidence interval for the population
proportion (to 3 decimals).
A simple random sample of 700 individuals provides 200 Yes responses. a. What is the point...
A simple random sample of 700 individuals provides 200 Yes
responses.
a. What is the point estimate of the proportion of the
population that would provide Yes responses (to 3 decimals, if
needed)?
b. What is your estimate of the standard error of the proportion
(to 4 decimals)?
c. Compute the 95% confidence interval for the population
proportion (to 3 decimals).
( , )
The Consumer Reports National Research Center conducted a
telephone survey of 2,000 adults to learn about...
A simple random sample of 600 individuals provides 100 Yes responses. a. What is the point...
A simple random sample of 600 individuals provides 100 Yes
responses.
a. What is the point estimate of the proportion
of the population that would provide Yes responses (to 2
decimals)?
Later use p(average) rounded to 2 decimal places.
b. What is your estimate of the standard error
of the proportion (to 4 decimals)?
c. Compute the 95% confidence interval for the
population proportion (to 4 decimals).
A simple random sample of 600 individuals provides 100 Yes responses. a. What is the point...
A simple random sample of 600 individuals provides 100 Yes
responses.
a. What is the point estimate of the proportion of the
population that would provide Yes responses (to 3 decimals, if
needed)?
b. What is your estimate of the standard error of the proportion
(to 4 decimals)?
c. Compute the 95% confidence interval for the population
proportion (to 3 decimals).
CH 8 1. A simple random sample of 900 individuals provides 300 Yes responses. a. What...
CH 8
1.
A simple random sample of 900 individuals provides 300 Yes
responses.
a. What is the point estimate of the proportion of the
population that would provide Yes responses (to 3 decimals, if
needed)?
b. What is your estimate of the standard error of the proportion
(to 4 decimals)?
c. Compute the 95% confidence interval for the population
proportion (to 3 decimals).
( , )
2.
A simple random sample of 60 items resulted in a sample mean of...
1. A random sample of 45 individuals provide 32 Yes responses. What is the point estimate...
1.
A random sample of 45 individuals provide 32 Yes responses.
What is the point estimate of the proportion of the population
that would provide Yes responses?
What is your estimate of the standard error of the sample
proportion, σp?
Construct the 95% confidence interval for the population
proportion.
Consider the alternative hypothesis
Ha:p<0.8. Conduct the test with the
rejection region approach with the 5% significance level.
Calculate the p-value for the test in part d
and draw your conclusion.
A simple random sample of size n equals 400 individuals who are currently employed is asked...
A simple random sample of size n equals 400 individuals who are
currently employed is asked if they work at home at least once per
week. Of the 400 employed individuals surveyed, 34 responded that
they did work at home at least once per week. Construct a 99%
confidence interval for the population proportion of employed
individuals who work at home at least once per week.
The upper bound is (Round to three decimal places as
needed.)
A simple random sample of size n equals n=400 individuals who are currently employed is asked...
A simple random sample of size n equals n=400 individuals who
are currently employed is asked if they work at home at least once
per week. Of the 400 employed individuals surveyed, 40 responded
that they did work at home at least once per week. Construct a 99%
confidence interval for the population proportion of employed
individuals who work at home at least once per week.
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