Yahoo Answers: Answers and Comments for Data Management Question? [Mathematics]
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From Anonymous
enUS
Sun, 12 Nov 2017 13:45:00 +0000
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Yahoo Answers: Answers and Comments for Data Management Question? [Mathematics]
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https://answers.yahoo.com/question/index?qid=20171112134500AAiGlYL
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From Puzzling: You have a uniform distribution with a range o...
https://answers.yahoo.com/question/index?qid=20171112134500AAiGlYL
https://answers.yahoo.com/question/index?qid=20171112134500AAiGlYL
Sun, 12 Nov 2017 14:50:39 +0000
You have a uniform distribution with a range of 120 seconds.
180  60 = 120
PART A:
Between 60 and 100, there are 40 seconds (out of 120 total)
P(X < 100) = 40/120 = 1/3
Answer:
1/3
PART B:
Between 130 and 180, there are 50 seconds (out of 120 total)
P(X > 130) = 50/120 = 5/12
Answer:
5/12

From cidyah: We have a uniform distribution between 60 and ...
https://answers.yahoo.com/question/index?qid=20171112134500AAiGlYL
https://answers.yahoo.com/question/index?qid=20171112134500AAiGlYL
Sun, 12 Nov 2017 13:54:05 +0000
We have a uniform distribution between 60 and 180
f(x) = 1/(18060) , 60 < x < 180
= (1/60) , 60 < x < 180
What is the probability that the timer runs out in less than 100 s?
(1/60) ∫[60,100] dx
= (1/60)(10060)
= 40/60
= 4/6
= 2/3
What is the probability that the timer lasts more than 130 s
(1/60) ∫[130,180] dx
= (1/60)((180130)
= 50/60
= 5/6