The number of flaws in metal sheets 100 cm by 150 cm is known to follow

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 2E
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The number of flaws in metal
sheets 100 cm by 150 cm is known
to follow
a Poisson distribution. On inspecting
a large number of these metal
sheets it is found that 20% of
these sheets contain at least one
flaw.
(a) Find the average number of
flaws per sheet.
(b) Find the probability of
observing one flaw in a metal
sheet selected at random/
Transcribed Image Text:The number of flaws in metal sheets 100 cm by 150 cm is known to follow a Poisson distribution. On inspecting a large number of these metal sheets it is found that 20% of these sheets contain at least one flaw. (a) Find the average number of flaws per sheet. (b) Find the probability of observing one flaw in a metal sheet selected at random/
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