Question

simple random sampling uses a sample of size n from a population of
size N to obtain data that fan be used to make inferences about the
characteristics of a population. suppose that, from a population of
80 bank accounts, we want to take a random sample of four accounts
in order to learn about the population. How many different random
samples of four accounts are possible?

Answer #1

1)
An experiment with three outcomes has been repeated 50 times,
and it was learned that E1occurred 20 times,
E2occurred 11 times, and
E3occurred 19 times. Assign probabilities to
the following outcomes for E1,
E2and E3. Round your answer
to two decimal places.
P(E1)
P(E2)
P(E3)
2)Simple random sampling uses a sample of size n from a
population of size N to obtain data that can be used to
make inferences about the characteristics of a population. Suppose
that, from...

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.
(a) Construct an 80% confidence interval about mu if the
sample size, n, is 29.
(b) Construct an 80% confidence interval about mu if the
sample size, n, is 21.
(c) Construct a 70% 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 samplemean,
x overbar
,
is found to be
105
,
and the sample standarddeviation,s, is found to be
10
.
(a)Construct
an
80
%
confidence interval about
mu
if the samplesize,n, is
26
.
(b)Construct
an
80
%
confidence interval about
mu
if the samplesize,n, is
16
.
(c)Construct
a
70
%
confidence interval about
mu
if the samplesize,n, is
26
.
(d)Could...

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,...

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 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 size of n=800 is obtained from a
population whose size is N=10,000,000 and whose population
proportion with a specified characteristic is p=.32.
a)describe the sampling distribution
b) What is the probability of obtaining x=350 or more
individuals with the characteristic?

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 an 80 % confidence interval about mu if the
sample size, n, is 29 .
(b) Construct an 80 % confidence interval about mu if the
sample size, n, is 13 . How does decreasing the sample size...

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. 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...

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