please answer manually 3.18. A manufacturer of television sets is interested in theeffect on tube conductivity of four different types of coatingfor color picture tubes. A completely randomized experimentis conducted and the following conductivity data areobtained:Coating Type123424143152134129Conductivity150137132132141149136127146143127129(a) Is there a difference in conductivity due to coatingtype? Use a = 0.05.(b) Estimate the overall mean and the treatment effects.(c) Compute a 95 percent confidence interval estimateof the mean of coating type 4. Compute a 99 percentconfidence interval estimate of the mean differencebetween coating types 1 and 4. (d) Test all pairs of means using the Fisher LSD methodwith a = 0.05.(e) Use the graphical method discussed in Section 3.5.3 tocompare the means. Which coating type produces thehighest conductivity?(f) Assuming that coating type 4 is currently in use, whatare your recommendations to the manufacturer? Wewish to minimize conductivity.

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Answered: 3.18. A manufacturer of television sets…

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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3.20 A manufacturer of television sets is interested in the effect on tube con- ductivity of four different types of coating for color picture tubes. A completely randomized experiment is conducted and the following conductivity data are obtained: Coating Type Conductivity 1 143 141 150 146 2 152 149 137 143 3 134 136 132 127 4 129 127 132 129 (a) Is there a difference in conductivity due to coating type? Use a = 0.05. (b) Estimate the overall mean and the treatment effects. (c) Compute a 95 percent confidence interval estimate of the mean of coating type 4. Compute a 99 percent confidence interval estimate of the mean difference between coating types 1 and 4 . (d) Test all pairs of means using the Fisher LSD method with a = 0.05.
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