a) A data is collected from Lab A. Sample mean is 12, SD is 2.4
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a) A data is collected from Lab A. Sample mean is 12, SD is 2.4and sample size if 16. Another set of data from Lab B have a meanof 10 (assuming SDB is also 2.4 and nB=16).If we choose α = 0.05, do you think mean of Lab B is close enoughto be considered the “same†as that of Lab A? Why?
b) Same as problem 4), except SD of Lab B is SDB=4.4.If we choose α = 0.05, do you think the mean of Lab B is closeenough to be considered the “same†as that of Lab A? Why?
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a Data n1 16 n2 16 x1bar 12 x2bar 10 s1 24 s2 24 Hypotheses Ho 1 2 Ha 1 2 Decision Rule 005 Degrees of freedom 16 16 2 30 Lower Critical t score 2042272449 Upper Critical t score 2042272449 Reject Ho if t 2042272449 Test Statistic
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