Question
7.53 Assume simple random sampling. Calculate the confi-dence interval for the population total for each of...
7.53 Assume simple random sampling. Calculate the confi-dence interval for the population total for each of the following.
a. N = 1325; n = 121; s = 20; x = 182; 95% confidence
level
b. N = 2100; n = 144; s = 50; x = 1,325; 98% confidence leve
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
Simple random sampling was used to obtain a sample of n = 90 elements from a...
Simple random sampling was used to obtain a sample of
n = 90
elements from a population of
N = 600.
The sample mean was
x = 85,
and the sample standard deviation was found to be
s = 9.
(a)
Estimate the population total.
=
(b)
Estimate the standard error of the population total. (Round your
answer to four decimal places.)
s
=
(c)
Develop an approximate 95% confidence interval for the
population total. (Round your answers to four...
A simple random sample of size n is drawn from a population that is normally distributed....
A simple random sample of size n is drawn from a population that
is normally distributed. The sample mean, overbar x, is found to
be 115, and the sample standard deviation, s, is found to be 10.
(a) Construct a 98% confidence interval about μ if the sample
size, n, is 20. (b) Construct a 98% confidence interval about μ
if the sample size, n, is 25. (c) Construct a 99% confidence
interval about μ if the sample size, n,...
A simple random sample of size n is drawn from a population that is normally distributed....
A simple random sample of size n is drawn from a population that
is normally distributed. The sample mean, x overbar, is found to
be 115, and the sample standard deviation, s, is found to be 10.
(a) Construct a 98% confidence interval about mu if the sample
size, n, is 16. (b) Construct a 98% confidence interval about mu
if the sample size, n, is 20. (c) Construct a 99% confidence
interval about mu if the sample size, n,...
A simple random sample of size n is drawn from a population that is normally distributed....
A simple random sample of size n is drawn from a population that
is normally distributed. The sample mean, x overbar, is found to
be 105, and the sample standard deviation, s, is found to be 10.
(a) Construct a 95% confidence interval about mu if the sample
size, n, is 26. (b) Construct a 95% confidence interval about mu
if the sample size, n, is 20. (c) Construct an 80% confidence
interval about mu if the sample size, n,...
A simple random sample of size n is drawn from a population that is normally distributed....
A simple random sample of size n is drawn from a population that
is normally distributed. The sample mean, x overbarx, is found to
be 112, and the sample standard deviation, s, is found to be 10.
(a) Construct aa 98% confidence interval about muμ if the
sample size, n, is 26.
(b) Construct aa 98% confidence interval about muμ if the
sample size, n, is 12.
(c) Construct aa 90% confidence interval about muμ if the
sample...
A simple random sample of size n is drawn from a population that is known to...
A simple random sample of size n is drawn from a population that
is known to be normally distributed. The sample variance is
determined to be 20.
a) Construct a 95% confidence interval for σ² if the sample size
is 40.
b) How does increasing the level of confidence affect the width
of the confidence interval?
Use the given confidence level and sample data to find a confidence interval for the population...
Use the given confidence level and sample data to find a
confidence interval for the population standard deviation . Assume
that a simple random sample has been selected from a population
that has a normal distribution. Salaries of college who took a
course in college
98% confidence n=81 x^-=
$65,700 s=$17,931
the table of Chi-Square critical values.
$ < standard deviation < $
A simple random sample of size n is drawn from a population that is normally distributed....
A simple random sample of size n is drawn from a population that
is normally distributed. The sample mean, x overbar, is found to
be 110, and the sample standard deviation, s, is found to be 10.
(b) Construct a 98% confidence interval about mu if the sample
size, n, is 26.
A simple random sample of size n=15 is drawn from a population that is normally distributed....
A simple random sample of size n=15 is drawn from a population
that is normally distributed. The sample mean is found to be x
overbar=62 and the sample standard deviation is found to be s=19.
Construct a 95% confidence interval about the population mean.
The 95% confidence interval is (_,_).
(Round to two decimal places as needed.)
Use the given confidence level and sample data to find a confidence interval for the population...
Use the given confidence level and sample data to find a
confidence interval for the population standard deviation sigma .
Assume that a simple random sample has been selected from a
population that has a normal distribution.
Salaries of college professors who took a philosophy course in
college
95 % confidence; n = 91, x overbar = $65,200, s =
$16,815
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 17 minutes ago
asked 52 minutes ago
asked 57 minutes ago
asked 1 hour ago
asked 2 hours ago
asked 2 hours ago
asked 2 hours ago
asked 2 hours ago
asked 2 hours ago
asked 2 hours ago
asked 3 hours ago
asked 3 hours ago