Question
In: Statistics and Probability
A random sample of size n = 40 is selected from a population that has a...
A random sample of size n = 40 is selected from a population that has a proportion of successes p = 0.8.
1) Determine the mean proportion of the sampling distribution of the sample proportion.
2) Determine the standard deviation of the sampling distribution of the sample proportion, to 3 decimal places.
3) True or False? The sampling distribution of the sample proportion is approximately normal.
Solutions
orchestra answered 1 year agoRelated Solutions
A random sample of size 40 is selected from a population with the mean of 482...
A random sample of size 40 is selected from a population with
the mean of 482 and standard deviation of 18. This sample of 40 has
a mean, which belongs to a sampling distribution.
a) Determine the shape of the sampling distribution b) Find the
mean and standard error of the sampling distribution
c) Find the probability that the sample mean will be between 475
and 495?
d) Find the probability that the sample mean will have a value
less...
A simple random sample of size n equals n=40 is drawn from a population. The sample...
A simple random sample of size
n equals n=40
is drawn from a population. The sample mean is found to be
x overbar equals 120.3
and the sample standard deviation is found to be
s equals 12.3
Construct a 99% confidence interval for the population
mean.
A simple random sample of size n equals n=40 is drawn from a population. The sample...
A simple random sample of size
n equals n=40
is drawn from a population. The sample mean is found to be
x overbar equals x=120.1
and the sample standard deviation is found to be
s equals s=12.5.
Construct a 99% confidence interval for the population
mean.
The lower bound is:
The upper bound is:
*ANSWERS FOR TI 84 CALC
a random sample size of 100 is selected from a population with P equals 40
a random sample size of 100 is selected from a
population with P equals 40
A simple random sample of size n equals 40 is drawn from a population. The sample...
A simple random sample of size n equals 40 is drawn from a
population. The sample mean is found to be x overbar equals 121.9
and the sample standard deviation is found to be s equals 12.9.
Construct a 99% confidence interval for the population mean.
Lower bound:
Upper bound:
A simple random sample of size n=40 is drawn from a population. The sample mean is...
A simple random sample of size n=40 is drawn from a population.
The sample mean is found to be x=121.7 and the sample standard
deviation is found to be s=13.3.
Construct a 99% confidence interval for the population
mean.
The lower bound is
(Round to two decimal places as needed.)
A simple random sample of size n= 40 is drawn from a population. The sample mean...
A simple random sample of size n= 40 is drawn from a population.
The sample mean is found to be x= 120.6 and the sample standard
deviation is found to be
s 13.3 Construct a 99% confidence interval for the population
mean.
A simple random sample of size n equals 40n=40 is drawn from a population. The sample...
A simple random sample of size
n equals 40n=40
is drawn from a population. The sample mean is found to be
x overbar equals 121.1x=121.1
and the sample standard deviation is found to be
s equals 12.7s=12.7.
Construct a 99% confidence interval for the population
mean.
The lower bound is..
the upper bound is..
A random sample of size n = 100 is taken from a population of size N...
A random sample of size n = 100 is taken from a population of
size N = 600 with a population proportion of p =0.46. Is it
necessary to apply the finite population correction factor?
Calculate the expected value and standard error of the sample
proportion. What is the probability that the sample mean is less
than .40?
A random sample of size n = 69 is taken from a population of size N...
A random sample of size n = 69 is taken from a
population of size N = 971 with a population proportion
p = 0.68.
a-1. Is it necessary to apply the finite
population correction factor?
Yes or 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.)
Expected Value-
Standard Error-
b. What is the probability that the sample
proportion is...
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