Question

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?

Yes

No

Answer #1

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

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.

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...

Random samples of size n = 200 are taken from a population with
p = 0.08.
a. Calculate the centerline, the upper control limit (UCL), and
the lower control limit (LCL) for the p¯chart
b. Calculate the centerline, the upper control limit (UCL), and
the lower control limit (LCL) for the p¯ chart if samples of 120
are used.
c. Discuss the effect of the sample size on the control limits.
The control limits have a ___ spread with smaller...

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,...

Random samples of size n= 400 are taken from a
population with p= 0.15.
a.Calculate the centerline, the upper control
limit (UCL), and the lower control limit (LCL) for the p
chart.
b.Suppose six samples of size 400 produced the
following sample proportions: 0.06, 0.11, 0.09, 0.08, 0.14, and
0.16. Is the production process under control?

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 simple random sample of size 11 is drawn from a normal
population whose standard deviation is σ=1.8. The sample mean is
¯x=26.8.
a.) Construct a 85% confidence level for μ. (Round answers to two
decimal place.)
margin of error:
lower limit:
upper limit:
b.) If the population were not normally distributed, what
conditions would need to be met? (Select all that apply.)
the population needs to be uniformly distributed
σ is unknown
simple random sample
large enough sample size...

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...

14. A sample of size 82 will be drawn from a population with
mean 24 and standard deviation 9
.a. Find the probability that will be less than 26

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 6 minutes ago

asked 17 minutes ago

asked 31 minutes ago

asked 1 hour 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 2 hours ago