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b) Your sample mean = 545 Your sd = 68.9553 Your standard error = 68.9553 / √ 9 SE = 68.9553/3 New standard error = 22.9851 = t = (545-500) / 22.9851 t = 1.9578 c) n-1=15 = P( |t| > 2.71) =0.0161
