Gears produced by a grinding process are categorized either as conforming (suitable for intended purpose), degraded (unsuitable for intended purpose, but usable for another purpose), or scrap (not usable). Suppose that 80% of gears produced are conforming, 15% are degraded, and 5% are scrap. Ten gears are selected at random. (a) What is the probability that one or more gear is scrap? (b) What is the probability that eight or more are conforming or degraded? (c) What is the probability that 4 are conforming, 4 are degraded and 2 are scrap?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
icon
Related questions
Question

Explain well

Gears produced by a grinding process are categorized either as conforming (suitable for intended
purpose), degraded (unsuitable for intended purpose, but usable for another purpose), or scrap (not
usable). Suppose that 80% of gears produced are conforming, 15% are degraded, and 5% are scrap.
Ten gears are selected at random.
(a) What is the probability that one or more gear is scrap?
(b) What is the probability that eight or more are conforming or degraded?
(c) What is the probability that 4 are conforming, 4 are degraded and 2 are scrap?
Transcribed Image Text:Gears produced by a grinding process are categorized either as conforming (suitable for intended purpose), degraded (unsuitable for intended purpose, but usable for another purpose), or scrap (not usable). Suppose that 80% of gears produced are conforming, 15% are degraded, and 5% are scrap. Ten gears are selected at random. (a) What is the probability that one or more gear is scrap? (b) What is the probability that eight or more are conforming or degraded? (c) What is the probability that 4 are conforming, 4 are degraded and 2 are scrap?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps

Blurred answer
Recommended textbooks for you
A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON
A First Course in Probability
A First Course in Probability
Probability
ISBN:
9780321794772
Author:
Sheldon Ross
Publisher:
PEARSON