Question
In: Statistics and Probability
Given a normal distribution of scores calculate 95% confidence interval for the standard deviation? Given: Sample...
Given a normal distribution of scores calculate 95% confidence interval for the standard deviation? Given: Sample mean = 87.1667. Sample size is 12. Sample variance = 60.88.
Solutions
orchestra answered 1 year agoRelated Solutions
Calculate the two-sided 95% confidence interval for the population standard deviation (sigma) given that a sample...
Calculate the two-sided 95% confidence interval for the
population standard deviation (sigma) given that a sample of size
n=8 yields a sample standard deviation of 7.96.
Use the standard normal distribution or the t-distribution to construct a 95% confidence interval for the...
Use the standard normal distribution or the t-distribution to
construct a 95% confidence interval for the population mean.
Justify your decision. If neither distribution can be used,
explain why. Interpret the results. In a random sample of 17
patients at a hospital's minor emergency department, the mean
waiting time before seeing a medical professional was 14 minutes
and the standard deviation was 9 minutes. Assume the waiting times
are not normally distributed. Which distribution should be used to
construct the...
Use the standard normal distribution or the t-distribution to construct a 95% confidence interval for the...
Use the standard normal distribution or the t-distribution to
construct a 95% confidence interval for the population mean.
Justify your decision. If neither distribution can be used,
explain why. Interpret the results. In a random sample of 47
people, the mean body mass index (BMI) was 27.7 and the standard
deviation was 6.02. Which distribution should be used to construct
the confidence interval? Choose the correct answer below:
Use the standard normal distribution or the t-distribution to construct a 95% confidence interval for the...
Use the standard normal distribution or the t-distribution to
construct a 95% confidence interval for the population mean.
Justify your decision. If neither distribution can be used,
explain why. Interpret the results. In a random sample of 18
mortgage institutions, the mean interest rate was 3.49% and the
standard deviation was 0.48%. Assume the interest rates are
normally distributed. Which distribution should be used to
construct the confidence interval? A. Use a normal distribution
because nless than30 and the interest...
Use the standard normal distribution or the t-distribution to construct a 95% confidence interval for the...
Use the standard normal distribution or the t-distribution to
construct a
95%
confidence interval for the population mean. Justify your
decision. If neither distribution can be used, explain why.
Interpret the results. In a random sample of
12
mortgage institutions, the mean interest rate was
3.48%
and the standard deviation was
0.32%.
Assume the interest rates are normally distributed.
Which distribution should be used to construct the confidence
interval?
A.Use a t-distribution because the interest rates are normally
distributed and...
Construct a 95% confidence interval for the population standard deviation of a random sample of 15...
Construct a 95% confidence interval for the population standard
deviation of a random sample of 15 crates which have a mean weight
of 165.2 points and a standard deviation of 12.9 pounds. Assume the
population is normallyn distributed.
A. 9.9, 18.8
B. 9.4, 20.3
Please show work.
one can calculate the 95% confidence interval for the mean with the population standard deviation knowing...
one can calculate the 95% confidence interval for the
mean with the population standard deviation knowing this gives us
an upper and lower confidence limit what happens if we decide to
calculate the 99% confidence interval describe how the increase in
the confidence level has changed the width of the confidence
interval
One can calculate the 95% confidence interval for the mean with the population standard deviation known....
One can calculate the 95% confidence interval for the mean with
the population standard deviation known. This will give us an upper
and a lower confidence limit. What happens if we decide to
calculate the 99% confidence interval? Describe how the increase in
the confidence level has changed the width of the confidence
interval. Do the same for the confidence interval set at 80%.
Include an example with actual numerical values for the intervals
in your post to help with...
One can calculate the 95% confidence interval for the mean with the population standard deviation known....
One can calculate the 95% confidence interval for the mean with
the population standard deviation known. This will give us an upper
and a lower confidence limit. What happens if we decide to
calculate the 99% confidence interval?
Your task for this discussion is as follows:
Describe how the increase in the confidence level has changed
the width of the confidence interval. Do the same for the
confidence interval set at 80%.
Include an example with actual numerical values for...
Find out the 95% confidence interval for a sample whose Mean=10.50 and Standard Deviation is= 2.0....
Find out the 95% confidence interval for a sample whose
Mean=10.50 and Standard Deviation is= 2.0. The sample size is
n=50.
** please I need the answer in the computer typing not hand
writing.
Subject: Statistic
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