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6. The following summary gives zinc mass (g) for two different brands of size D batteries: Brand sample size sample mean () sample standard deviation (s) Duracell 138.52 Energizer 149.07 15 16 7.76 6.52 Assuming that both zinc mass distributions are at least approximately normal with equal variances, test at a = 0.05 whether true average zinc mass is different for the two brands of batteries using classical approach. Please show all 4 steps clearly and interpret your conclusion.

6. The following summary gives zinc mass (g) for two different brands of size D batteries: Brand sample size sample mean () sample standard deviation (s) Duracell 138.52 Energizer 149.07 15 16 7.76 6.52 Assuming that both zinc mass distributions are at least approximately normal with equal variances, test at a = 0.05 whether true average zinc mass is different for the two brands of batteries using classical approach. Please show all 4 steps clearly and interpret your conclusion.

MATLAB: An Introduction with Applications
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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6. The following summary gives zinc mass (g) for two different brands of size D batteries: Brand sample size sample mean (ñ) sample standard deviation (s) Duracell 15 138.52 7.76 Energizer 16 149.07 6.52 Assuming that both zinc mass distributions are at least approximately normal with equal variances, test at a = 0.05 whether true average zinc mass is different for the two brands of batteries using classical approach. Please show all 4 steps clearly and interpret your conclusion.
Transcribed Image Text:6. The following summary gives zinc mass (g) for two different brands of size D batteries: Brand sample size sample mean (ñ) sample standard deviation (s) Duracell 15 138.52 7.76 Energizer 16 149.07 6.52 Assuming that both zinc mass distributions are at least approximately normal with equal variances, test at a = 0.05 whether true average zinc mass is different for the two brands of batteries using classical approach. Please show all 4 steps clearly and interpret your conclusion.
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