Question

A simple random sample of size

n=22

is drawn from a population that is normally distributed. The sample mean is found to be

x overbar 69

and the sample standard deviation is found to be

s equals=20.

Construct a

90%

confidence interval about the population mean.

The

90%

confidence interval is

(?,?)

Answer #1

A simple random sample of size n =24 is drawn from a population
that is normally distributed. The sample mean is found to be x
overbar equals 58 and the sample standard deviation is found to be
s=12. Construct a 90% confidence interval about the population
mean.
The lower bound is?
The upper bound is?

simple random sample of size n is drawn from a population that
is normally distributed. The sample mean, x overbar, is found to
be 112, and the sample standard deviation, s, is found to be
10.
(a) Construct a 90% confidence interval about mu if the
sample size, n, is 19.
(b) Construct a 90% confidence interval about mu if the sample
size, n, is 12.
(c) Construct an 80% confidence interval about mu if the
sample size,...

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 109, 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 18.
(b) Construct a 95% confidence interval about mu if the
sample size, n, is 14.
(c) Construct a 90% 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. 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. The sample mean, x overbar , is found to
be 106 , and the sample standard deviation, s, is found to be 10
. (a) Construct a 96 % confidence interval about mu if the
sample size, n, is 20 . (b) Construct a 96 % confidence interval
about mu if the sample size, n, is 13 . (c) Construct a 70 %
confidence...

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 nequals24 is drawn from a
population that is normally distributed. The sample mean is found
to be x overbar equals 58 and the sample standard deviation is
found to be sequals10. Construct a 90% confidence interval about
the population mean. The 90% confidence interval is ( nothing,
nothing). (Round to two decimal places as needed.)

A simple random sample of size n=13 is drawn from a population
that is normally distributed. The sample mean is found to be x
overbar equals 50 and the sample standard deviation is found to be
s=12. Construct a 95% confidence interval about the population
mean. The lower bound is nothing. The upper bound is nothing.
(Round to two decimal places as needed.).

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 90% confidence interval about mu if the sample
size, n, is 24. (b) Construct a 90% 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=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.)

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