Question

use the standard normal distribution or the t-distribution to construct a 90% 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 24 mortgage institutions, the mean interest rate was 3.62% and the standard deviation was 0.41% Assume the interest rates are normally distributed.

which distribution should be used to construct the confidence interval?

The 90% confidence interval is?

Interpret the results

Answer #1

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 3.57% and the
standard deviation was 0.38%. Assume the interest rates are
normally distributed.

Use the standard normal distribution or the t-distribution to
construct a 99% 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 13
mortgage institutions, the mean interest rate was 3.59% and the
standard deviation was 0.42%. Assume the interest rates are
normally distributed.
Select the correct choice below and, if necessary, fill in any
answer boxes to complete your choice.
A. The 99% confidence...

Use the standard normal distribution or the t-distribution to
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1.6 3.4 2.8 6.9 6.1 5.8 7.3 6.5...

Use the standard normal distribution or the t-distribution to
construct a
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Which distribution should be used to construct the confidence
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(Use a t-distribution because the sample is random n>=30, and
o is...

Use the standard normal distribution or the t-distribution to
construct a
99%
confidence interval for the population mean. Justify your
decision. If neither distribution can be used, explain why.
Interpret the results.
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yards per carry for all running backs was
1.31.
The yards per carry of 25 randomly selected running backs are
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1.3
5.8
6.1
5.6
7.3
7.1
4.7
2.8...

We use the t distribution to construct a confidence
interval for the population mean when the underlying population
standard deviation is not known. Under the assumption that the
population is normally distributed, find
tα/2,df for the following
scenarios. (You may find it useful to
reference the t table. Round your
answers to 3 decimal places.)
tα/2,df
a.
A 90% confidence level and a sample of 11 observations.
b.
A 95% confidence level and a sample of 11 observations.
c.
A...

Construct the indicated confidence interval for the population
mean using the? t-distribution. Assume the population is normally
distributed. c = 0.90?, x=14.4?, s=2.0?, n=10
The 90?% confidence interval using a? t-distribution is
(_,_)

We use the t distribution to construct a confidence
interval for the population mean when the underlying population
standard deviation is not known. Under the assumption that the
population is normally distributed, find
t??2,df for the following scenarios. Use Table
2. (Round your answers to 3 decimal places.)
t?/2,df
a. A 95% confidence
level and a sample of 8 observations.
b. A 90% confidence
level and a sample of 8 observations.
c. A 95% confidence
level and a...

You are given the sample mean and the population standard
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stock was $116.70. Assume the population standard deviation is
$11.02. The 90% confidence interval is ( , ).
Construct the indicated confidence interval for the population
mean μ...

Construct the indicated confidence interval for the population
mean of each data set. If it is possible to construct a confidence
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***Please provide formulas used, step by step
process, and hand write....thank you so much!
In a random sample of 40 patients, the mean waiting time at a
dentist’s office was 20 minutes and the standard deviation was 7.5
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