MODULE 7 WGU C955 PROBABILITY
QUESTIONS AND CORRECT
ANSWERS(LATEST UPDATE).
What is the probability of someone having a birthday in March or
December?
a 1/6
b 1/4
c 1/3
d 1/2 - CORRECT ANSWER -1/6
A man will have enough money to pay the rent if he gets 100 hours of work
at job A or if his wife earns enough money to pay the rent for both of them.
If we want to find the probability that this couple will be able to pay the
rent, what is the relevant piece of information to know when deciding
whether to use the formula P(A or B) =P(A)+P(B) or P(A or B)
=P(A)+P(B)−P(A and B) ?
a) Whether there is any possibility of his wife earning enough money and
his getting 100 hours of work at job A.
b) Whether his getting 100 hours of work at job A is independent of his
wife's ability to pay for the rent.
c) Whether there is more probability of his getting 100 hours of work at job
A or his wife's being able to earn the money to pay the rent.
d) Whether his getting 100 hours of work at job A is the complement of his
wife's being able to earn the money to pay the rent. - CORRECT ANSWER -
,Whether there is any possibility of his wife earning enough money and his
getting 100 hours of work at job A.
According to Urban Institute, in 2014, a family-of-three with an income of
$0 through $30,000 is considered poor or near-poor; $30,000 through
$50,000 is considered lower middle class; $50,000 to $100,000 is
considered middle class; $100,000 to $350,000 is considered upper
middle class and $350,000 and above is considered rich. If Event A is being
lower middle class, which of the following is a true statement?
a) "not A" is a family-of-three with an income of $350,000 or above
b) The complement of A is a family-of-three with an income of $350,000 or
above
c) A is independent of the other categories of income
d) The universe of incomes for a family-of-three is poor and near-poor,
lower middle class, middle class, upper middle class, and rich - CORRECT
ANSWER -The universe of incomes for a family-of-three is poor and near-
poor, lower middle class, middle class, upper middle class, and rich
There are 2 suits of cards, spades and clubs, and 13 cards in each suit,
numbered 2 through 10 inclusive as well as a jack, queen, king and ace.
What is the probability that someone pulls a spade that is NOT a jack,
queen, king or ace?
a) 4/13
b) 10/26
c) 9/26
d) 4/26 - CORRECT ANSWER -9/26
, Roger has two blue ties, one red tie, two blue coats, and two orange coats.
What is the probability that he wears either a blue tie or a blue coat?
a) 2/3
b) 5/6
c) 1/2
d) 1/3 - CORRECT ANSWER -5/6
Two events that cannot happen simultaneously in the same experiment are
called disjoint.
a) True
b) False - CORRECT ANSWER -True
At a restaurant for lunch, there are 4 sandwich choices, 6 side choices, and
8 drink choices. What is the size of the sample space if one choice is
selected from each?
a) 24
b) 32
c) 164
d) 192 - CORRECT ANSWER -192
The table below shows the breakdown of workers at a business. What is the
probability of selecting a worker who is over 45 years of age to the nearest
hundredth?
QUESTIONS AND CORRECT
ANSWERS(LATEST UPDATE).
What is the probability of someone having a birthday in March or
December?
a 1/6
b 1/4
c 1/3
d 1/2 - CORRECT ANSWER -1/6
A man will have enough money to pay the rent if he gets 100 hours of work
at job A or if his wife earns enough money to pay the rent for both of them.
If we want to find the probability that this couple will be able to pay the
rent, what is the relevant piece of information to know when deciding
whether to use the formula P(A or B) =P(A)+P(B) or P(A or B)
=P(A)+P(B)−P(A and B) ?
a) Whether there is any possibility of his wife earning enough money and
his getting 100 hours of work at job A.
b) Whether his getting 100 hours of work at job A is independent of his
wife's ability to pay for the rent.
c) Whether there is more probability of his getting 100 hours of work at job
A or his wife's being able to earn the money to pay the rent.
d) Whether his getting 100 hours of work at job A is the complement of his
wife's being able to earn the money to pay the rent. - CORRECT ANSWER -
,Whether there is any possibility of his wife earning enough money and his
getting 100 hours of work at job A.
According to Urban Institute, in 2014, a family-of-three with an income of
$0 through $30,000 is considered poor or near-poor; $30,000 through
$50,000 is considered lower middle class; $50,000 to $100,000 is
considered middle class; $100,000 to $350,000 is considered upper
middle class and $350,000 and above is considered rich. If Event A is being
lower middle class, which of the following is a true statement?
a) "not A" is a family-of-three with an income of $350,000 or above
b) The complement of A is a family-of-three with an income of $350,000 or
above
c) A is independent of the other categories of income
d) The universe of incomes for a family-of-three is poor and near-poor,
lower middle class, middle class, upper middle class, and rich - CORRECT
ANSWER -The universe of incomes for a family-of-three is poor and near-
poor, lower middle class, middle class, upper middle class, and rich
There are 2 suits of cards, spades and clubs, and 13 cards in each suit,
numbered 2 through 10 inclusive as well as a jack, queen, king and ace.
What is the probability that someone pulls a spade that is NOT a jack,
queen, king or ace?
a) 4/13
b) 10/26
c) 9/26
d) 4/26 - CORRECT ANSWER -9/26
, Roger has two blue ties, one red tie, two blue coats, and two orange coats.
What is the probability that he wears either a blue tie or a blue coat?
a) 2/3
b) 5/6
c) 1/2
d) 1/3 - CORRECT ANSWER -5/6
Two events that cannot happen simultaneously in the same experiment are
called disjoint.
a) True
b) False - CORRECT ANSWER -True
At a restaurant for lunch, there are 4 sandwich choices, 6 side choices, and
8 drink choices. What is the size of the sample space if one choice is
selected from each?
a) 24
b) 32
c) 164
d) 192 - CORRECT ANSWER -192
The table below shows the breakdown of workers at a business. What is the
probability of selecting a worker who is over 45 years of age to the nearest
hundredth?
