Question

a) Consider random samples of size 56 drawn from population
*A* with proportion 0.77 and random samples of size 78 drawn
from population *B* with proportion 0.67 .

Find the standard error of the distribution of differences in
sample proportions, p^A-p^B.

Round your answer for the standard error to three decimal
places.

standard error = ___________________

b) Consider random samples of size 470 drawn from population
*A* with proportion 0.55 and random samples of size 210
drawn from population *B* with proportion 0.49 .

Find the standard error of the distribution of differences in
sample proportions, p^A-p^B.

Round your answer for the standard error to three decimal
places.

standard error = ___________________

Answer #1

Consider random samples of size 86 drawn from population A with
proportion 0.47 and random samples of size 64 drawn from population
B with proportion 0.19 . Find the standard error of the
distribution of differences in sample proportions, p^A-p^B.
Round your answer for the standard error to three decimal
places.

Consider random samples of size 82 drawn from population
A with proportion 0.45 and random samples of size 64 drawn
from population B with proportion 0.11 .
(a) Find the standard error of the distribution of differences
in sample proportions, p^A-p^B.
Round your answer for the standard error to three decimal
places.
standard error = Enter your answer in accordance to the question
statement
(b) Are the sample sizes large enough for the Central Limit
Theorem to apply?...

Consider random samples of size 58 drawn from population
A with proportion 0.78 and random samples of size 76 drawn
from population B with proportion 0.68 .
(a) Find the standard error of the distribution of differences
in sample proportions, p^A-p^B.
Round your answer for the standard error to three decimal
places.
standard error = Enter your answer in accordance to the question
statement
(b) Are the sample sizes large enough for the Central Limit
Theorem to apply?
Yes
No

If random samples of size 11 are drawn from a population with
mean 7 and standard deviation 2 , find the standard error of the
distribution of sample means.
Round your answer to three decimal places, if necessary.
standard error =
Assume the sample is a random sample from a distribution that is
reasonably normally distributed and we are doing inference for a
sample mean. Find endpoints of a t-distribution with 1%
beyond them in each tail if the sample...

A random sample of size n = 101 is taken from a
population of size N = 2,719 with a population proportion
of p = 0.67. [You may find it useful to reference
the z table.]
a-1. Is it necessary to apply the finite
population correction factor?
Yes
No
a-2. Calculate the expected value and the
standard error of the sample proportion. (Round "expected
value" to 2 decimal places and "standard error" to 4 decimal
places.)
b. What is the...

Consider taking a random sample from a population with p = 0.25.
What is the standard error of p-hat for random samples of size 400?
Round to four decimal places. Would the standard error of p-hat be
smaller for random samples of size 200 or samples of size 400? 400
Does cutting the sample size in half from 400 to 200 double the
standard error? yes/no

A random sample of size n = 75 is taken from a
population of size N = 650 with a population proportion
p = 0.60.
Is it necessary to apply the finite population correction
factor? Yes or No?
Calculate the expected value and the standard error of the
sample proportion. (Round "expected value" to 2 decimal
places and "standard error" to 4 decimal places.)
What is the probability that the sample proportion is less than
0.50? (Round “z” value to...

15. Random samples of size 81 are taken from an infinite
population whose mean and standard deviation are 200 and 18,
respectively. The distribution of the population is unknown. The
mean and the standard error of the mean are (assuming infinite
population)
a. 200 and 18
b. 81 and 18
c. 9 and 2
d. 200 and 2
16. A population has a mean of 300 and a standard deviation of
18. A sample of 144 observations will be taken....

Suppose that we have a population proportion P=0.30 and a random
sample of size n=100 drawn from the population.
What is the probability that the sample proportion is between
0.22 and 0.34?

1. Random samples of size 15 are repeatedly drawn from a
distribution that can be approximated by a normal distribution with
a mean of 65 and a standard deviation of 17. Since the values in
the sample are random variables, the mean associated to those
samples, ?̅, is also a random variable.
a. What is the expected mean of the distribution of ?̅?
b. What is the expected standard deviation of the distribution
of ?̅?
Hi Chegg Answerer, could you,...

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