Question

An
urn contains 8 white balls and 6 red balls. If Sam chooses 5 balls
at random from the urn, what is the probability that he will select
3 white balls and 2 red balls? Round your answer 3 decimal
places.

Answer #1

One urn contains 10 red balls and 10 white balls, a second urn
contains 8 red balls and 4 white balls, and a third urn contains 5
red balls and 10 white balls. An urn is selected at random, and a
ball is chosen from the urn. If the chosen ball is white, what is
the probability that it came from the third urn? Justify your
answer.

An urn contains 3 white balls and 7 red balls. A second urn
contains 7 white balls and 3 red balls. An urn is selected, and the
probability of selecting the first urn is 0.2. A ball is drawn from
the selected urn and replaced. Then another ball is drawn and
replaced from the same urn. If both balls are white, what are the
following probabilities? (Round your answers to three decimal
places.)
(a) the probability that the urn selected...

An urn contains two red balls and three white balls.
If a ball is chosen at random, what is the probability that it
is white?
Group of answer choices
0
1
2/5
1/5
3/5
An urn contains two red balls and three white balls.
Suppose two balls are drawn randomly. What is the probability
that both will be white?
Group of answer choices
1/10
3/20
6/20
9/20
9/25

Urn 1 contains 7 red balls and 3 black balls. Urn 2 contains 4
red balls and 1 black ball. Urn 3 contains 4 red balls and 3 black
balls. If an urn is selected at random and a ball is drawn, find
the probability that it will be red.
enter your answer as a decimal rounded to 3 decimal places

An urn contains 8 white balls and 4 red balls. The experiment
consists of drawing 2 balls at random from the urn without
replacement.
a) What is the probability that both will be the same color?
b) Same question for part A, but with replacement.

Three balls are randomly drawn from an urn that contains four
white and nine red balls. (a) What is the probability of drawing a
red ball on the third draw? (Round your answer to 3 decimal
places.) Correct: Your answer is correct. (b) What is the
probability of drawing a red ball on the third draw given that at
least one red ball was drawn on the first two draws? (Round your
answer to 3 decimal places.]

We have two urns: Urn A contains 6 red balls and 4 white balls,
Urn B contains 4 red balls and 8 white balls. A die is rolled, if a
number less than 3 appears; we go to box A; if the result is 3 or
more, we go to ballot box B. Then we extract a ball. It is
requested:
to. Probability that the ball is red and ballot box B.
b. Probability that the ball is white.

Urn 1 contains 4 red balls and 3 black balls. Urn 2 contains 1
red ball and 3 black balls. Urn 3 contains 4 red balls and 2
black balls. If an urn is selected at random and a ball is
drawn, find the probability that it will be red.
Enter your answer as a fraction in simplest form or a decimal
rounded to 3 decimal places.
P(red)=

An urn contains 2 white balls, 3 red balls, and 5 blue balls.
You draw 3 balls (all at once) from the urn. What is the
probability that they are all blue?

Urn 1 contains 7 red balls and 3 black balls. Urn 2 contains 1
red ball and 3 black balls. Urn 3 contains 3 red balls and 1 black
ball. If an urn is selected at random and a ball is drawn, find the
probability that it will be red.
Enter your answer as a fraction in simplest form or a decimal
rounded to 3 decimal places.

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