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How to solve the question by using SAS？Could you please give me copies of relevant SAS output？Thanks3.26. Three brands of batteries are under study. It is suspect-m ed that the lives (in weeks) of the three brands are different. Five randomly selected batteries of each brand are tested with the following results: Weeks of Life Brand 1 Brand 2 Brand 3 100 96 92 76 80 75 84 82 108 100 98 100 92(a) Are the lives of these brands of batteries different? (b) Analyze the residuals from this experiment. (c) Construct a 95 percent confidence interval estimate on the mean life of battery brand 2. Construct a 99 per- cent confidence interval estimate on the mean differ ence between the lives of battery brands 2 and 3 (d) Which brand would you select for use? If the manu- facturer will replace without charge any battery that fails in less than 85 weeks, what percentage would the company expect to replace?

math   Statistics-And-Probability   
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3126 ) Solution and Selected latteve. 여 hee BBB3 4C (ot LOD a6 a2- aG 84- a8 loo BanA, Band 2 Null tupothest Here the ave erage -cltt etual acoss to fte +mre l erua across 여 he bonds eves fe of he batlevie acoSs brandsRES Δ RES 2 RES 3 4-S -3.4 -0-4 -3 2 -4.4 4.6 2.С -4 4 -3 2Residual Plots for Brand 1, Brand 2, Brand 3

Normal Probability Plot 50 10 10 Residual

Versus Fits 80 85 90 95 100 Fitted Value

Histogram 4.8 3.6 2.4 1.2 0.0 IL 4 2 02 4 Residual

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