surface excellent 80 2 finish good 10 8 Let A denote the event that a sample has excellent surface fi ish, and let B denote the event that a sample has excelle length, Are events A and B independent?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
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Give given, required, and solution to each problem.

2-84. Samples of a cast aluminum part are classified on the
basis of surface finish (in microinches) and length measure-
ments. The results of 100 parts are summarized as follows:
length
excellent
good
surface
excellent
80
2
finish
good
10
8
Let A denote the event that a sample has excellent surface fin-
ish, and let B denote the event that a sample has excellent
length. Are events A and B independent?
Transcribed Image Text:2-84. Samples of a cast aluminum part are classified on the basis of surface finish (in microinches) and length measure- ments. The results of 100 parts are summarized as follows: length excellent good surface excellent 80 2 finish good 10 8 Let A denote the event that a sample has excellent surface fin- ish, and let B denote the event that a sample has excellent length. Are events A and B independent?
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