A girl speaks the truth 4 out of 5 times. If she throws a
die and reports it to be a 6, What is the probability of it
being a 6?
- 4 Answers
- 13154 Views
- Wipro, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / dijit
A = event that it is actually a six.
B = event that the girl reports it is a six.
required is P[A|B] i.e. Probability that it is actually a six given that the girl reports so.
So, P[A|B] = {P[B|A].P(A)}/ P(B) .....(1)
P[B|A]= P{Girl reports a six| actually a six}
= P{Girl speaks the truth}
= 4/5
P(A)=P{ it is a six }= 1/6
P(B)=P{Girl reports a six}
=P{Girl reports a six, A}+P{Girl reports a six, it is not a six}
=P[B|A].P(A)+P[B|A'].P(A')
=(4/5).(1/6)+(1/5).(5/6)
= 3/10
Hence, from equation (1)
P[A|B]= {(4/5)(1/6)}/(3/10) = 4/9
| Is This Answer Correct ? | 29 Yes | 3 No |
Answer / k sanghvi
p(a)=the girl speak truth
p(e)=the dies report
p(e/a)=if the girl speak truth tht the die report is 6
p(a)=4/5
p(e/a)=4/5/1/6
so the probabaility
=p(a)*p(e/a)
=4/5*4/5/1/6
=4/5*24/5
=96/5
| Is This Answer Correct ? | 1 Yes | 22 No |
Which of the following is the surface area of a perfect sphere with a radius of 10 meters?
Give the range for the following six values 2, 7, 11, 19, 25, 33
The converse of this theorem is: if the sum of the squares of two sides of a triangle equal the square of the third side then the triangle is a right triangle. What is thename of the theorem?
where is the y intercept for y = sin x?
State Euler's theorem for the homogenous function f(x,y) with degree n.
What is the difference between Proc Univariate and Proc Freq? (Could you give please some theoretical or practical example)?
Define homogenous function of x and y with degree n.
what is the radius of the circle 4x**2+4y**2 =100
If we are given with the dimensions of length,width and height (all dimensions are in mm).How will we find the value of weight? Explain it with an example.
Farmer john grows corn, tomatoes, potatoes and squash. He has only 2 fields for growing these products and cannot grow more than one product per field. How manyplanting combinations can be done in one season?
What is New Math Movement?
0 Answers Mahatma Gandhi University,
The probability of getting at least one head in a single throw of three coins is
Biological Sciences 
