A diameter measurement is done for a cylindrical workpiece. The mean and standard deviation of the measurement are found as 4 mm and 0.8 mm respectively. The confidence level of the measurement is...

Extracted text: A diameter measurement is done for a cylindrical workpiece. The mean and standard deviation of the measurement are found as 4 mm and 0.8 mm respectively. The confidence level of the measurement is 45.4%. If the maximum measured data is 6 mm, find the minimum measured data (Assume that the measured data is normally distributed). O A) 3.06 mm O B) 4.08 mm O C) 2.12 mm O D) 2.84 mm