An article in Fire Technology (LR DİMaio, PJ Chiesa, MS Ott - Fire technology, 1975 - Springer, p. 164-174) investigated two different foam expanding agents that can be used in the nozzles of fire-fighting spray equipment. A random sample of five observations with an aqueous film-forming foam (AFFF) had a sample mean of 4.5 and a standard deviation of 0.59. A random sample of five observations with alcohol-type concentrates (ATC) had a sample mean of 6.7 and a standard deviation 0.85. Construct the following: (a) A 90% two-sided confidence interval on. Round your answer to three decimal places (e.g. 98.765). (b) A 95% two-sided confidence interval on o /o.Comment on the comparison of the width of this interval with the width of the interval in part (a). Round your answer to three decimal places (e.g. 98.765). The 95% confidence interval is than the 90% confidence interval. (c) A 90% lower-confidence bound on of lo;. Round your answer to three decimal places (e.g. 98.765). VI VI VI VI VI
An article in Fire Technology (LR DİMaio, PJ Chiesa, MS Ott - Fire technology, 1975 - Springer, p. 164-174) investigated two different foam expanding agents that can be used in the nozzles of fire-fighting spray equipment. A random sample of five observations with an aqueous film-forming foam (AFFF) had a sample mean of 4.5 and a standard deviation of 0.59. A random sample of five observations with alcohol-type concentrates (ATC) had a sample mean of 6.7 and a standard deviation 0.85. Construct the following: (a) A 90% two-sided confidence interval on. Round your answer to three decimal places (e.g. 98.765). (b) A 95% two-sided confidence interval on o /o.Comment on the comparison of the width of this interval with the width of the interval in part (a). Round your answer to three decimal places (e.g. 98.765). The 95% confidence interval is than the 90% confidence interval. (c) A 90% lower-confidence bound on of lo;. Round your answer to three decimal places (e.g. 98.765). VI VI VI VI VI
MATLAB: An Introduction with Applications
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Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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![An article in Fire Technology (LR DiMaio, PJ Chiesa, MS Ott - Fire technology, 1975 - Springer, p. 164-174) investigated two different
foam expanding agents that can be used in the nozzles of fire-fighting spray equipment. A random sample of five observations with
an aqueous film-forming foam (AFFF) had a sample mean of 4.5 and a standard deviation of 0.59. A random sample of five
observations with alcohol-type concentrates (ATC) had a sample mean of 6.7 and a standard deviation 0.85. Construct the following:
(a) A 90% two-sided confidence interval on of /o,.
i
Round your answer to three decimal places (e.g. 98.765).
(b) A 95% two-sided confidence interval on of/o,. Comment on the comparison of the width of this interval with the width of the
interval in part (a).
i
Round your answer to three decimal places (e.g. 98.765).
The 95% confidence interval is
than the 90% confidence interval.
(c) A 90% lower-confidence bound on o lo,.
of
Round your answer to three decimal places (e.g. 98.765).
VI
VI
VI
VI
VI](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6384ed42-3cb0-4532-b426-11a7c5ba4d6a%2F2114b746-c78d-4aa0-a225-ab038b51c34d%2Ffma2hhu_processed.png&w=3840&q=75)
Transcribed Image Text:An article in Fire Technology (LR DiMaio, PJ Chiesa, MS Ott - Fire technology, 1975 - Springer, p. 164-174) investigated two different
foam expanding agents that can be used in the nozzles of fire-fighting spray equipment. A random sample of five observations with
an aqueous film-forming foam (AFFF) had a sample mean of 4.5 and a standard deviation of 0.59. A random sample of five
observations with alcohol-type concentrates (ATC) had a sample mean of 6.7 and a standard deviation 0.85. Construct the following:
(a) A 90% two-sided confidence interval on of /o,.
i
Round your answer to three decimal places (e.g. 98.765).
(b) A 95% two-sided confidence interval on of/o,. Comment on the comparison of the width of this interval with the width of the
interval in part (a).
i
Round your answer to three decimal places (e.g. 98.765).
The 95% confidence interval is
than the 90% confidence interval.
(c) A 90% lower-confidence bound on o lo,.
of
Round your answer to three decimal places (e.g. 98.765).
VI
VI
VI
VI
VI
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