Question 12 Suppose that a standard mass is measured 30 times with the same instrument and the calculated values of a = standard error of mean = 0.08 and s = standard deviation = 0.43 for a normal...

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Extracted text: Question 12 Suppose that a standard mass is measured 30 times with the same instrument and the calculated values of a = standard error of mean = 0.08 and s = standard deviation = 0.43 for a normal distribution. If the instrument is then used to measure an unknown mass and the reading is 105.6 kg, what is the error of the reading at 95% confidence? 2 = 0. 08 S =0,43 n= 30