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MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question
The annual earnings of 12 randomly selected computer software engineers have a sample standard deviation of $3707.
Assume the sample is from a
Use a 99% level of confidence. Interpret the results.

Transcribed Image Text:What is the confidence interval for the population variance o2?
| ) (Round to the nearest integer as needed.)
Interpret the results. Select the correct choice below and fill in the answer box(es) to complete your choice.
(Round to the nearest integer as needed.)
A. With 99% confidence, you can say that the population variance is between O B. With 1% confidence, you can say that the population variance is between
and
and
C. With 1% confidence, you can say that the population variance is less than
O D. With 99% confidence, you can say that the population variance is greater
than
What is the confidence interval for the population standard deviation o?
) (Round to the nearest integer as needed.)
Interpret the results. Select the correct choice below and fill in the answer box(es) to complete your choice.
(Round to the nearest integer as needed.)
A. With 99% confidence, you can say that the population standard deviation is
less than $
B. With 1% confidence, you can say that the population standard deviation is
between $
and $
C. With 1% confidence, you can say that the population standard deviation is
greater than $
O D. With 99% confidence, you can say that the population standard deviation is
between $
and $
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