Question

At a certain factory the thickness of a washer manufactured has

mean = 12 mm and variance 0.5625 mm.

What is the largest probability that the washer thickness will be at boundary or beyond the acceptance interval of 10.9 to 13.1?

Note: not using normality and need to use probabilistic inequality statement.

Answer 1

The solution is done showing all steps with calculations and explanations. Hope you can understand.