a. What is the probability they are all completed of PLAI three s = RI) PESP(S) . What is the probability that at least one was not completed on time?
a. What is the probability they are all completed of PLAI three s = RI) PESP(S) . What is the probability that at least one was not completed on time?
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section: Chapter Questions
Problem 14T: An unbalanced coin is weighted so that the probability of heads is 0.55. The coin is tossed ten...
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Question
Transcribed Image Text:12.
A survey of publishing jobs indicates that 92 percent are completed on time. Assume that three jobs
are selected for study.
a. What is the probability they are all completed on time?
PLAI threes = R) PZS P(S)
a.
b. What is the probability that at least one was not completed on time?
b.
Expert Solution
Step 1
Let , X be the number of jobs completed on time
Here , X→B(n=3 , p=0.92)
The probability mass function of X is ,
; x=0,1,2,.......,n and q=1-p
= 0 ; otherwise
Our aim is to find the following :
a) The probability they are all completed on time
b) The probability that at least one was not completed on time
Step by step
Solved in 2 steps
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