SOLUTION: pleae help me in this
let abowl contain 10 chips of he same size and shape , one and only one of these chips is red , continue to draw chips from the bowl , one at atime and at
Algebra.Com
Question 59209: pleae help me in this
let abowl contain 10 chips of he same size and shape , one and only one of these chips is red , continue to draw chips from the bowl , one at atime and at random without replacement , until red chip is drawn ,
1. find the pdf. Of X , the number of trials needed to draw the red chip
2. compute p(X< or equal 4 )
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
let abowl contain 10 chips of he same size and shape , one and only one of these chips is red , continue to draw chips from the bowl , one at atime and at random without replacement , until red chip is drawn ,
1. find the pdf. Of X , the number of trials needed to draw the red chip
P(1)=1/10
P(2)=(9/10)(1/9)=1/10
P(3)=(9/10)(8/9)(1/8)=1/10
...
P(10)=(9/10)(8/9)(7/8)...(1/2)(1/1)=1/10
---------
E(X)=(1/10)(1+2+3+...+9+10)=5.5
---------
2. compute p(X< or equal 4 )
=4/10
=================
Cheers,
Stan H.
RELATED QUESTIONS
Let a bowl contain 10 chips of the same size and shape. One and only one of those chips... (answered by stanbon)
please help me
bowl 1 contain 6 red chips and 4 blue chips, five of these 10 chips are... (answered by stanbon)
please i need your help
abowl contain 10 chips, of which 8 are marked $ 2 each and 2 are (answered by stanbon)
Jar A has 4 red chips and 6 black chips. Jar B has 5 red chips and 5 black chips. One... (answered by Fombitz)
abowl contain 10 chips, of which 8 are marked $ 2 each and 2 are marke $5 each, let... (answered by stanbon)
A box of 10 cookies claims to have a total of 100 chocolate chips. The chips in 7 of the... (answered by solver91311)
A box has 2 red chips and 2 blue chips and 1 green chip what is the probability of... (answered by Fombitz)
A bowl contains 5 red chips 7 blue chips 6 yellow chips and 20 green chips . One chip is... (answered by ewatrrr)
Suppose there are 5 red chips and 8 blue chips in a container. Two chips are selected... (answered by Fombitz)