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 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

Question

Quizplus · Accepted Answer

The data suggests a normal distribution because the diameters are symmetrically distributed around the mean, with specific percentages falling within certain intervals, which is characteristic of a normal distribution.

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