Question
In: Statistics and Probability
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.
Solutions
orchestra answered 1 year agoRelated Solutions
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 _______
A simple random sample of 90 items from a population with σ = 7 resulted in...
A simple random sample of 90 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.
A simple random sample of 60 items resulted in a sample mean of 90. The population...
A simple random sample of 60 items resulted in a sample mean of
90. The population standard deviation is 12. a. Compute the 95%
confidence interval for the population mean (to 1 decimal). ( ? , ?
) b. Assume that the same sample mean was obtained from a sample of
120 items. Provide a 95% confidence interval for the population
mean (to 2 decimals). ( ? , ? )
A simple random sample of 90 items resulted in a sample mean of 60. The population...
A simple random sample of 90 items resulted in a sample mean of
60. The population standard deviation is
σ = 10.
(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 180 items. Provide a 95% confidence interval for the population
mean. (Round your answers to two decimal places.)
______ to _______
A simple random sample of 60 items resulted in a sample mean of 90. The population...
A simple random sample of 60 items resulted in a sample mean of
90. The population standard deviation is σ = 10. (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 120 items. Provide a 95%
confidence interval for the population mean. (Round your answers to
two decimal places.)
A simple random sample of 60 items resulted in a sample mean of 90. The population...
A simple random sample of 60 items resulted in a sample mean of
90. The population standard deviation is σ = 17.
a. Compute the 95% confidence interval for the population mean.
Round your answers to one decimal place.
b. Assume that the same sample mean was obtained from a sample
of 120 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 = 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.
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