Normal Distributions Are Very Commonly Used for Quality Control in Manufacturing

Multiple Choice

Normal distributions are very commonly used for quality control in manufacturing. For example, a
Manufacturer of light bulbs would surely be interested in studying how long their bulbs last. In one
Case, the lifetime of one model of light bulb is normally distributed and has a mean X = 1,900 hours
And a standard deviation of s = 250 hours. What is the probability that a bulb will last between 1,650
And 1,900 hours?

A) 0.5
B) 0.341
C) 0.841
D) 50