The British Columbia Institute of Technology provides on its Web site practical applications of statistics at mechanical engineering firms. A roll of plastic-coated wire has an average of 0.8 flaw per 4-meter length of wire. Suppose a quality-control engineer will sample a 4-meter length of wire from a roll of wire 220 meters in length. If no flaws are found in the sample, the engineer will accept the entire roll of wire.
Required:
a. What is the probability that the roll will be rejected?
b. What assumption did you make to find this probability?
