8. A surgical technique is performed on seven patients. You are told there is a 60% chance of success. Find the probability that the surgery is successful for (a) exactly five patients, (b) at least five patients, and (c) at most two patients.

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Chapter1: Starting With Matlab
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Answer to 8
ne number of defects per batch of DVD’s inspected:
efects
Batches
1
3
64
4
105
98
115
13
8.
7. Using the probability distribution created in question 6, what is the probability that
there were at most 2 defects in a batch?
8. A surgical technique is performed on seven patients. You are told there is a 60%
chance of success. Find the probability that the surgery is successful for (a) exactly five
patients, (b) at least five patients, and (c) at most two patients.
9. Thirty-one percent of vacationers say the primary purpose of their vacation is outdoor
recreation. You randomly select 10 vacationers and ask each to name the primary
purpose of his or her vacation. Find the probability that the numbers who say outdoor
recreation is the primary purpose of their vacation is exactly 3.
10. Of students ages 16 to 18 with A or B averages who plan to attend college after
graduation, 78% cheated to get higher grades (Source: "Who's Who Among American
High Schools Students"). Ten randomly chosen students with A or B averages that plan
to attend college after graduation were asked, “Did you cheat to get higher grades?"
What is the probability that exactly four students answered no?
Transcribed Image Text:ne number of defects per batch of DVD’s inspected: efects Batches 1 3 64 4 105 98 115 13 8. 7. Using the probability distribution created in question 6, what is the probability that there were at most 2 defects in a batch? 8. A surgical technique is performed on seven patients. You are told there is a 60% chance of success. Find the probability that the surgery is successful for (a) exactly five patients, (b) at least five patients, and (c) at most two patients. 9. Thirty-one percent of vacationers say the primary purpose of their vacation is outdoor recreation. You randomly select 10 vacationers and ask each to name the primary purpose of his or her vacation. Find the probability that the numbers who say outdoor recreation is the primary purpose of their vacation is exactly 3. 10. Of students ages 16 to 18 with A or B averages who plan to attend college after graduation, 78% cheated to get higher grades (Source: "Who's Who Among American High Schools Students"). Ten randomly chosen students with A or B averages that plan to attend college after graduation were asked, “Did you cheat to get higher grades?" What is the probability that exactly four students answered no?
Expert Solution
Step 1

8)

Given:

n=7p=0.6q=1-p=1-0.6=0.4

X=The surgery is successful

X~Binomn=7,p=0.6

PX=x=nxpxqn-x,      x=0,1,...,n

 

 

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