Question

I need to complete this assignment using MINITAB. All answers MUST came out from the program. Thanks!

A quality control engineer has doubts about whether the diameter of a piece is changing in central tendency or in variation according to the day in which it occurs. To check if his suspicion is true, randomly select 50 different pieces and measure them in diameter. Repeat this for 4 days (generate this data with the parameters indicated in the Table Table 1 Day Distribución Desviación estándar (inch) Mean (inches) Normal 0.60 Normal 3.3 0.20 Normal 3.4 Normal 3.5 0.05 0.30 a. What is the average diameter per day? And in the 4 days together? b. What is the standard deviation of the diameter per day? And in the 4 days together? c. What is the range of the observations of the 4 days together? d. Which day have less variability?

Answer 1