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Suppose 5% of men and 0.25% of women have grey hair. A grey haired person is selected at random. What is the probability of this person being male? Assume that there are equal number of males and females.
cbse
class12
modelpaper
2012
sec-c
q29
math
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Feb 4, 2013
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thanvigandhi_1
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1
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Suppose that 5% of men and 0.25% of women have grey hair. A grey haired person is selected at random. What is the probability of this person being male? Assume that there are equal number of males and females.
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Jan 30, 2014
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Suppose that 5% of men and 0.25% of women have grey hair. A grey haired person is selected at random. What is the probability of this person being male? Assume that there are equal number of males and females.
asked
Nov 27, 2012
by
balaji.thirumalai
cbse
class12
bookproblem
ch13
misc
p582
q3
sec-b
medium
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0
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0
answers
Assume that the chances of a patient having a heart attack is 40%. It is assumed that a meditation and yoga course reduce the risk of heart attack by 30% and prescription of certain drug reduces its chance by 25%. At a time, a patient can choose any one of the two options with equal probabilities. It is given that after going through one of the two options the patient selected at random suffers a heart attack. Find the probability that the patient followed a course of meditation and yoga?
asked
Jan 27, 2013
by
thanvigandhi_1
cbse
class12
modelpaper
2012
sec-c
q29
math
0
votes
0
answers
Assume that the chance of a patient having a heart attack 40%. It is also assumed that a meditation and yoga course reduces the risk of heart attack by 30% and prescription of a certain drug reduces its chance by 25%. At a time a patient can choose any one of the two option with equal probabilities. It is given that after going through one of the two options the patient selected at random suffers a heart attack. Find the probability that the patient followed a course of meditation and yoga.
asked
Dec 29, 2012
by
thanvigandhi_1
cbse
class12
modelpaper
2012
sec-c
q29
math
0
votes
0
answers
suppose that 10 men out of 100 and 20 women out of 1000 are clour blind. A colour blind person os chosen at random.What is the probability of his being male
asked
Nov 27, 2013
by
mohan.monisha07
0
votes
0
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Suppose, we have four boxes A, B, C and D containing coloured marbles as given below : One of the boxes has been selected at random and a single marble is drawn from it. If the marble is red, what is the probability that it was drawn from box A? box B? and box C?
asked
Jan 2, 2013
by
thanvigandhi_1
cbse
class12
modelpaper
sec-c
q29
math
0
votes
0
answers
There are 40 workers in a factory who are participating in strike for increase in wages. Out of them 5 workers are sincere to management and believe that management know each thing and do the needful. Management selects 2 workers at random out of them. Write the probability distribution for the selected worker who are sincere. Also find the mean of the distribution.
asked
Jan 28, 2013
by
thanvigandhi_1
cbse
class12
modelpaper
2012
sec-c
q29
math
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