Four marbles are being drawn from an urn containing 8 blue and 2
red marbles. Let...
Four marbles are being drawn from an urn containing 8 blue and 2
red marbles. Let X be the number of blue marbles drawn. What this
the probability mass function for X if the marbles are drawn with
replacement.
Four marbles are drawn simultaneously and at random from an urn
containing 8 black, 7 white, and 5 red marbles.
What is the probability that at least one of them is white?
Consider a purple urn containing 7 red marbles and 3 blue
marbles as well as a green urn containing 5 blue marbles and 4
yellow marbles. An experiment consists of drawing a marble from the
purple urn, placing it in the green urn, and then drawing a marble
from the green urn. Given that the marble drawn from the green urn
was blue, what is the probability that the marble drawn from the
purple urn was red? Give your answer...
Experiment: An urn contains 4 blue marbles and 8 orange marbles.
Two marbles are drawn without replacement. What is the probability
that a blue and orange marble are drawn? A) 0.4444 B) 0.2424 C)
0.1212 D) 0.4848 E) 0.2222
The answer is D I just don't understand how my professor got
it.
Two
marbles are drawn without replacement,from an urn containg 4red , 5
white,and 2 blue marbles. Determine A- both are red
B- The first marble drawn is red and the second is blue
.
C- The first mable drawn is blue, and the second red
D-- One of the marbles is red and the other is blue
E-- At least one of them is blue.
2. Suppose mary wants to study in a college probabilityof
getting admission to CCE is...
An urn has marbles of red, blue, and yellow. There are seven
marbles of each of the three colors. The experiment consists of
drawing a single, random marble from the urn. Define a random
variable X by
X(s) = -1 if the marble has red
0, if the marble has blue
+1, if the marble has yellow
54 random samples of X are taken. Approximate the probability
that the mean of the sample is between 0 and 1/20.
You randomly select 2 marbles from a mug containing 6 blue
marbles, 6 red marbles, and 3 white marbles. How many times greater
is the probability of selecting 2 red marbles when you replace the
first marble before selecting the second marble than when you do
not replace the first marble before selecting the second
marble?
Two marbles are drawn at random and with replacement from a box
containing 2 red, 3 green, and 4 blue marbles. Let's define the
following events: A = {two red marbles are drawn} B = {two green
marbles are drawn} C = {two blue marbles are drawn} D = two marbles
of the same color are drawn}
Find the probabilities of the following events:
(a) P(A), P(B), P(C), and P(D).
(b) P(A|D).
Suppose you have a bag containing 2 red marbles, 3 white
marbles, and 4 blue marbles.
a) if you draw 3 marbles simultaneously, what is the probability
that you get one of each color?
b) If you draw 3 marbles one at a time, what Is the probability
that you get one of each color?
An urn contains 5 blue marbles and 4 red marbles. You draw a
certain number of marbles from the urn at random with replacement .
. .
(A) You win $243.00 if you draw more blue marbles than red
marbles. Assuming that you want to win, which is better: drawing 20
marbles or 200 marbles? Explain your answer
briefly.
(B) You win $177.00 if the percentage of red marbles that you
draw is less than 42%. Assuming that you want...
A box contains 5 green marbles, 8 blue marbles, and 8 red
marbles.
Three marbles are selected at random from the box, one at a
time, without replacement.
Find the probability that the first two marbles selected are not
red, and the last marble is red.