Question

A bag contains 6 red balls and 9 white balls. Two balls are drawn without replacement. (Enter your probabilities as fractions.)

(a) What is the probability that the second ball is white, given
that the first ball is red?

(b) What is the probability that the second ball is red, given that
the first ball is white?

(c) Answer part (a) if the first ball is replaced before the second
is drawn.

A survey questioned 1000 people regarding raising the legal drinking age from 18 to 21. Of the 530 who favored raising the age, 380 were female. Of the 470 who expressed opposition, 190 were female. (Enter your probabilities as fractions.)

(a) What is the probability that a person selected at random is
a female?

(b) What is the probability that a person selected at random favors
raising the age if the person is a woman?

Answer #1

A bag contains 6 red balls and 7 white balls. Two balls are
drawn without replacement. (Enter your probabilities as
fractions.)
(a) What is the probability that the second ball is white, given
that the first ball is red?
(b) What is the probability that the second ball is red, given
that the first ball is white?
(c) Answer part (a) if the first ball is replaced before the
second is drawn.

A bag contains 7 red balls and 5 white balls. Two balls are
drawn without replacement. (Enter your probabilities as
fractions.)
(a) What is the probability that the second ball is white, given
that the first ball is red?
(b) What is the probability that the second ball is red, given that
the first ball is white?
(c) Answer part (a) if the first ball is replaced before the second
is drawn.

A survey questioned 1000 people regarding raising the legal
drinking age from 18 to 21. Of the 530 who favored raising the age,
340 were female. Of the 470 who expressed opposition, 190 were
female. (Enter your probabilities as fractions.)
(a) What is the probability that a person selected at random is
a female?
(b) What is the probability that a person selected at random favors
raising the age if the person is a woman?

1. Two balls are drawn from a bag containing 9 white balls and 2
red balls. If the first ball is replaced before the second is
drawn, what is the probability that the following will occur?
(Enter your probabilities as fractions.) (a) both balls are red (b)
both balls are white (c) the first ball is red and the second is
white (d) one of the balls is black
2.The table gives the results of a survey of 1000 people...

Two balls are drawn from a bag containing 5 white balls and 7
red balls. If the first ball is replaced before the second is
drawn, what is the probability that the following will occur?
(Enter your probabilities as fractions.)
(a) both balls are red
(b) both balls are white
(c) the first ball is red and the second is white
(d) one of the balls is black

Two balls are drawn from a bag containing 4 white balls and 3
red balls. If the first ball is replaced before the second is
drawn, what is the probability that the following will occur?
(Enter your probabilities as fractions.)
(a) both balls are red
(b) both balls are white
(c) the first ball is red and the second is white
(d) one of the balls is black
A die is thrown twice. What is the probability that a 2...

A survey questioned 1000 people regarding raising the legal
drinking age from 18 to 21. Of the 590 who favored raising the age,
380 were female. Of the 410 who expressed opposition, 140 were
female. (Enter your probabilities as fractions.) (a) What is the
probability that a person selected at random is a female? (b) What
is the probability that a person selected at random favors raising
the age if the person is a woman??

1. In a Student Activity Participation Study (SAPS) survey, 30
engineering majors, 25 business majors, 20 science majors, 15
liberal arts majors, and 10 human development majors were selected.
Thirteen of the engineering, 10 of the science, 9 of the human
development, 7 of the business, and 6 of the liberal arts majors
selected for the study were female. (Enter your probabilities as
fractions.) (a) What is the probability of selecting a female if
one person from this group is...

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...

A bag contains blue and red balls. Two balls are drawn randomly
without replacement. The probability of selecting a blue and then a
red ball is 0.2. The probability of selecting a blue ball in the
first draw is 0.5. What is the probability of drawing a red ball,
given that the first ball drawn was blue?

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