Question

Note: Each bound should be rounded to ** three decimal
places**.

Q: A random sample of **n=100** observations
produced a mean of **x bar=35** with a standard
deviation of **s=5.**

(a) Find a **95%** confidence interval for μ
**Lower-bound: Upper-bound:**

(b) Find a **90%** confidence interval for μ
**Lower-bound: Upper-bound:**

(c) Find a **99%** confidence interval for μ
**Lower-bound: Upper-bound:**

Answer #1

Note: Each bound should be rounded to three decimal places.
A random sample of ?=100 observations produced a mean of
?=26 with a standard deviation of ?=5
(a) Find a 99% confidence interval for ?
Lower-bound:___ Upper-bound:___
(b) Find a 90% confidence interval for ?
Lower-bound:___ Upper-bound:___
(c) Find a 95% confidence interval for ?
Lower-bound: ___ Upper-bound:____

(1 pt) A random sample of 100 observations produced a mean of
x-bar = 23.1 from a population with a normal distribution and a
standard deviation = 2.42. (a) Find a 90% confidence interval (b)
Find a 99% confidence interval (c) Find a 95% confidence
interval

A simple random sample of size n is drawn from a population that
is normally distributed. The sample mean x bar is found to be
109,
and the sample standard deviation, s, is found to be 10.
a. Construct 95% confidence interval about miu, if the sample
size n is 28. Find lower and upper bound.
b. Construct 95% confidence interval about miu, if the sample
size n is 17. Find lower and upper bound.
c.Construct 80% confidence interval about...

A simple random sample of size n is drawn. The sample mean,
x overbarx,
is found to be
18.4,
and the sample standard deviation, s, is found to be
4.9
Construct a
95%
confidence interval about
muμ
if the sample size, n, is
35.
find lower and upper bounds.
Construct a
99%
confidence interval about
muμ
if the sample size, n, is 35 what is the lower and upper
bounds?

A simple random sample of size n equals n=40 is drawn from a
population. The sample mean is found to be x=120.4 and the sample
standard deviation is found to be s equals s=12.5. Construct a 99%
confidence interval for the population mean.
a) The lower bound is __
b) The upper bound is ___
(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, is found to be 113,
and the sample standard deviation, s, is found to be 10.
(a) Construct a 90% confidence interval about μ if the sample
size, n, is 22.
(b) Construct a 90% confidence interval about μ if the sample
size, n, is 15.
(c) Construct an 80% confidence interval about μ if the
sample size, n, is...

A simple random sample of size n equals 40 is drawn from a
population. The sample mean is found to be x overbar equals 121.4
and the sample standard deviation is found to be s equals 12.4.
Construct a 99% confidence interval for the population mean.
The lower bound is ?. (Round to two decimal places as
needed.)
The upper bound is ?. (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 bar over x, is found to
be 109, 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 29
lower bound: __ upper bound: __
b) Re-do, but with a different interval. Construct a 95%
confidence interval about mu if sample size n, is 29...

The mean and standard deviation of a random sample of n
measurements are equal to 33.9 and 3.3, respectively.
a. Find the lower limit, the upper limit and the margin of error
for a 95% confidence interval for m if n = 100.
b. Find the lower limit, the upper limit and the margin of error
for a 95% confidence interval for m if n = 400.

A simple random sample of size n is drawn. The sample mean, x
overbar, is found to be 17.6, and the sample standard deviation,
s, is found to be 4.1. LOADING... Click the icon to view the table
of areas under the t-distribution. (a) Construct a 95%
confidence interval about mu if the sample size, n, is 35. Lower
bound: nothing; Upper bound: nothing (Use ascending order. Round
to two decimal places as needed.) (b) Construct a 95% confidence
interval...

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