A machine that cuts steel blanks (used for making bolts) to their proper length
ID: 3132246 • Letter: A
Question
A machine that cuts steel blanks (used for making bolts) to their proper length is suspected of being unreliable. The shop supervisor decides to check the output of the machine. On the day of checking, the machine is set to produce 2- centimeter blanks. The acceptable tolerance is ±0.05 centimeter. It would take too much time to measure all 600 blanks produced in 1 day, so representative group of 25 is selected. The following lengths in centimeters were obtained: 2.01 1.99 2.05 1.94 2.05 2.01 2.02 2.04 1.93 1.95 2.03 1.97 2.00 1.98 1.96 2.05 1.96 2.00 2.01 1.99 1.98 1.95 1.97 2.04 2.02
Explanation / Answer
Population scores: All the score corespondig to 600 banks
Smaple scores: Score corresponding to 25 selected blanks.
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