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Test if these two batteries have the same mass. Assuming that both battery masses distributions are at least approximately normal, carry out a test at significance level 0.05 to decide whether true average mass is different for the two types of batteries. Test Statistic: Brand Sample Size Sample Mean Sample SD Duracell IS \"8.52 7.76 Energizer 20 I490? l .53 Your answer Critical Value: * Your answer Please fill out this eld. Decision: * Your