1. Calculate a 99% confidence interval for true mean yarn tenacity when yarn count is 16.6, yarn contains 60% polyester, first nozzle pressure is 2, and second nozzle pressure is 6 if the estimated standard deviation of predicted tenacity under these circumstances is 0.34. a) What is the lower and upper bound? (Round to three decimal places). 2. The estimated SD of  when the values of the four predictors are 10, 0.5, 0.25, and 50, respectively, is 0.1143. Calculate both a 95% CI for true average roughness and a 95% PI for the roughness of a single specimen. (Round your answers to three decimal places.) a) What is the lower and upper bound of the confidence interval? b) What is the lower and upper bound of the prediction interval? c) Compare these two intervals. 1. The prediction interval is much wider than the the confidence interval. 2. The prediction interval is much narrower than the the confidence interval. 3. The prediction interval is the same width as the confidence interval.

Computer Networking: A Top-Down Approach (7th Edition)
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Author:James Kurose, Keith Ross
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1. Calculate a 99% confidence interval for true
mean yarn tenacity when yarn count is 16.6,
yarn contains 60% polyester, first nozzle
pressure is 2, and second nozzle pressure is 6 if
the estimated standard deviation of predicted
tenacity under these circumstances is 0.34.
a) What is the lower and upper bound? (Round
to three decimal places).
2. The estimated SD of  when the values of
the four predictors are 10, 0.5, 0.25, and 50,
respectively, is 0.1143. Calculate both a 95% CI
for true average roughness and a 95% PI for the
roughness of a single specimen. (Round your
answers to three decimal places.)
a) What is the lower and upper bound of the
confidence interval?
b) What is the lower and upper bound of the
prediction interval?
c) Compare these two intervals.
1. The prediction interval is much wider than the
the confidence interval.
2. The prediction interval is much narrower than
the the confidence interval.
3. The prediction interval is the same width as
the confidence interval.
Transcribed Image Text:1. Calculate a 99% confidence interval for true mean yarn tenacity when yarn count is 16.6, yarn contains 60% polyester, first nozzle pressure is 2, and second nozzle pressure is 6 if the estimated standard deviation of predicted tenacity under these circumstances is 0.34. a) What is the lower and upper bound? (Round to three decimal places). 2. The estimated SD of  when the values of the four predictors are 10, 0.5, 0.25, and 50, respectively, is 0.1143. Calculate both a 95% CI for true average roughness and a 95% PI for the roughness of a single specimen. (Round your answers to three decimal places.) a) What is the lower and upper bound of the confidence interval? b) What is the lower and upper bound of the prediction interval? c) Compare these two intervals. 1. The prediction interval is much wider than the the confidence interval. 2. The prediction interval is much narrower than the the confidence interval. 3. The prediction interval is the same width as the confidence interval.
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