SOLUTION: Please help, question is; Suppose we select without looking, one marble from a bag containing 6 red marbles and 8 blue marbles.
a)what is the probability of selecting a blue marbl
Algebra.Com
Question 850043: Please help, question is; Suppose we select without looking, one marble from a bag containing 6 red marbles and 8 blue marbles.
a)what is the probability of selecting a blue marble on the first try?
b) if you return the marble to the bag, what is the probability of selecting a red marble?
c) if you first selected a red marble and you don't return that marble to the bag, what is the probability of the second draw being a blue marble?
d) Starting over with all the marbles in the bag, how many draws would you need to guarantee blue marble?
Found 2 solutions by stanbon, richwmiller:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Please help, question is; Suppose we select without looking, one marble from a bag containing 6 red marbles and 8 blue marbles.
a)what is the probability of selecting a blue marble on the first try?:: 8/14
-------------------------------------------
b) if you return the marble to the bag, what is the probability of selecting a red marble?:: 6/14
-------------------------------------------
c) if you first selected a red marble and you don't return that marble to the bag, what is the probability of the second draw being a blue marble?::8/13
-----------------------------------------------------------
d) Starting over with all the marbles in the bag, how many draws would you need to guarantee getting a blue marble?:: 7
------------------------------------
Cheers,
Stan H.
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
a)8/14=4/7
b)6/14=3/7
c)8/13
d)you have to make 6+1=7 draws to guarantee a blue marble
RELATED QUESTIONS
Please help me. We are working on probability and I am not so good with it. I am not sure (answered by checkley75)
Please help me solve the below question?
From a bag containing: 5 red marbles, 6 blue... (answered by edjones)
a bag contains 6 red marbles 9 blue marbles and 5green marbles. you randomly select one... (answered by kilofighters,ikleyn)
What is the theoretic probability of randomly choosing a blue marble from a bag of 5 blue (answered by Theo)
probability that a red or green marble will be selected from a bag containing 9 red... (answered by ikleyn)
Why is the following not a binomial random variable? Select,
without replacement, 5... (answered by stanbon)
Hi, I need some probability help please.
1) A bag contains 5 red marbles, 3 white... (answered by ewatrrr)
We cannot get the correct answer to this probability question: A bag contains red & blue... (answered by edjones,stanbon)
A marble is drawn at random from a bag containing 6 red marbles, 4 white
marbles, and 5... (answered by stanbon)