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 lo. 0.0754 3.078 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). 0.050 i 4.628 Round your answer to three decimal places (e.g. 98.765). The 95% confidence interval is wider than the 90% confidence interval. (c) A 90% lower-confidence bound on o lo,. i 0.075 Round your answer to three decimal places (e.g. 98.765). VI VI

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 lo. 0.0754 3.078 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). 0.050 i 4.628 Round your answer to three decimal places (e.g. 98.765). The 95% confidence interval is wider than the 90% confidence interval. (c) A 90% lower-confidence bound on o lo,. i 0.075 Round your answer to three decimal places (e.g. 98.765). VI VI

Name: An article in Fire Technology (LR DiMaio, PJ Chiesa, MS Ott - Fire te
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Description: An article in Fire Technology (LR DiMaio, PJ Chiesa, MS Ott - Fire technology, 1975 - Springer, p. 164-174) investigated two differentfoam expanding agents that can be used in the nozzles of fire-fighting spray equipment. A random sample of five obs

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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