A Quality Control Manager at a Plant That Produces O-Rings

Multiple Choice

A quality control manager at a plant that produces o-rings is concerned about whether the diameter of the o-rings that are produced is conformable to the specification.She has calculated that the average diameter of the o-rings is 4.2 centimeters.She also knows that approximately 95% of the o-rings have diameters that fall between 3.2 and 5.2 centimeters and almost all of the o-rings have diameters between 2.7 and 5.7 centimeters.When modeling the diameters of the o-rings,which distribution should the scientists use?

A) Uniform distribution
B) Binomial distribution
C) Normal distribution
D) Exponential distribution