Question
In: Statistics and Probability
A simple random sample of 70 items from a population with = 9 resulted in a sample...
A simple random sample of 70 items from a population with = 9 resulted in a sample mean of 37.
If required, round your answers to two decimal places.
a. Provide a 90% confidence interval for the population mean. _______ to _______
b. Provide a 95% confidence interval for the population mean. _______ to _______
c. Provide a 99% confidence interval for the population mean. _______ to _______
Solutions
Expert Solution
| 90% confidence interval for the population mean. 35.23 to 38.77 |
| 95% confidence interval for the population mean. 34.89 to 39.11 |
| 99% confidence interval for the population mean. 34.23 to 39.77 |
orchestra answered 2 years agoRelated Solutions
A simple random sample of 90 items from a population with = 9 resulted in a sample...
A simple random sample of 90 items from a population
with = 9 resulted in a sample mean of 36.
If required, round your answers to two decimal places.
a. Provide a 90% confidence interval for the
population mean.
to
b. Provide a 95% confidence interval for the
population mean.
to
c. Provide a 99% confidence interval for the
population mean.
A simple random sample of 70 items from a population with σ, = 7 resulted in...
A simple random sample of 70 items from a population with
σ, = 7 resulted in a sample mean of 33.
If required, round your answers to two decimal places.
a. Provide a 90% confidence interval for the
population mean.
to
b. Provide a 95% confidence interval for the
population mean.
to
c. Provide a 99% confidence interval for the
population mean.
to
A simple random sample of 70 items resulted in a sample mean of 60. The population...
A simple random sample of 70 items resulted in a sample mean of
60. The population standard deviation is σ = 15.
(a) Compute the 95% confidence interval for the population mean.
(Round your answers to two decimal places.)
_________ to _________
(b) Assume that the same sample mean was obtained from a sample
of 140 items. Provide a 95% confidence interval for the population
mean. (Round your answers to two decimal places.)
_________ to _________
(c) What is the...
A simple random sample of 70 items resulted in a sample mean of 90. The population...
A simple random sample of 70 items resulted in a sample mean of
90. The population standard deviation is
σ = 15.
A. Compute the 95% confidence interval for the population mean.
(Round your answers to two decimal places.)
B. Assume that the same sample mean was obtained from a sample
of 140 items. Provide a 95% confidence interval for the population
mean. (Round your answers to two decimal places.)
A simple random sample of 70 items resulted in a sample mean of 90. The population...
A simple random sample of 70 items resulted in a sample mean of
90. The population standard deviation is
σ = 5.
(a)
Compute the 95% confidence interval for the population mean.
(Round your answers to two decimal places.)
to
(b)
Assume that the same sample mean was obtained from a sample of
140 items. Provide a 95% confidence interval for the population
mean. (Round your answers to two decimal places.)
to
(c)
What is the effect of a larger...
simple random sample of 80 items from a population with = 8 resulted in a sample...
simple random sample of 80 items from a population with = 8
resulted in a sample mean of 38. If required, round your answers to
two decimal places. a. Provide a 90% confidence interval for the
population mean. to b. Provide a 95% confidence interval for the
population mean. to c. Provide a 99% confidence interval for the
population mean. to
A simple random sample of 50 items from a population with = 6 resulted in a...
A simple random sample of 50 items from a population with = 6
resulted in a sample mean of 39. If required, round your answers to
two decimal places.
a. Provide a 90% confidence interval for the population mean.
to
b. Provide a 95% confidence interval for the population mean.
to
c. Provide a 99% confidence interval for the population
mean.
A simple random sample of 25 items from a normally distributed population resulted in a sample...
A simple random sample of 25 items from a normally distributed
population resulted in a sample mean of 80 and a sample standard
deviation of s=7.5. Construct a 95% confidence interval for the
population mean.
A simple random sample of 60 items from a population with σ = 7 resulted in...
A simple random sample of 60 items from a population with σ = 7
resulted in a sample mean of 38.
If required, round your answers to two decimal places.
a. Provide a 90% confidence interval for the
population mean.
_____ to _____
b. Provide a 95% confidence interval for the
population mean.
_____ to _____
c. Provide a 99% confidence interval for the
population mean.
_____ to _____
A simple random sample of 50 items from a population with σ = 8 resulted in...
A simple random sample of 50 items from a population with
σ = 8
resulted in a sample mean of 38. (Round your answers to two
decimal places.)
(a)
Provide a 90% confidence interval for the population mean.
to
(b)
Provide a 95% confidence interval for the population mean.
to
(c)
Provide a 99% confidence interval for the population mean.
to
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