WGU C955 - Module 7: Probability
Questions & Answers Correct 100%
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 - ANSWER-1/6
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?
Age
18−25 26−44 45+ Total
Male 75 200 125 400
Female 50 225 100 375
Total 125 425 225 775
a 0.16
b 0.29
c 0.42
d 0.55 - ANSWER-0.29
The table below shows the breakdown of workers at a business. What is the probability
that a randomly selected 18−25 year old is male (to the nearest hundredth)?
Age
18−25 26−44 45+ Total
Male 75 200 125 400
Female 50 225 100 375
Total 125 425 225 775
a 0.48
b 0.52
c 0.56
d 0.60 - ANSWER-0.60
The probability that Jimmy attends school on any given day is 0.98 . The probability
Jimmy misses a day of school, given that he missed the day before, is 0.5 . What is the
probability that Jimmy misses school on BOTH Tuesday and Wednesday?
a 0.0004
, b 0.01
c 0.02
d 0.04 - ANSWER-0.01
The following table shows the percentage of events at an arena.
Basketball 26%
Hockey 19%
Concert 18%
Table Tennis 9%
Other 28%
What is the disjoint probability of having a basketball or hockey game at the arena?
a 27%
b 37%
c 45%
d 55 - ANSWER-45%
A game has a 10 -sided fair die. What is the probability of rolling an even number or a
number less than 5 ?
a 1/10
b 3/10
c 7/10
d 9/10 - ANSWER-7/10
A survey on favorite pizza topping was given: 33% said cheese was their favorite
topping, 25% said pepperoni, 15% said sausage, and 27% said other. If two people are
picked at random and replaced, what is the probability of picking two people that like
cheese? Round your answer to a whole number.
a 0%
b 11%
c 33%
d 66% - ANSWER-11%
There was a marble drawn from a bag in an experiment and placed back in the bag
repeatedly. A red marble appeared 45 times, a blue marble 70 times, a green marble 63
times, and a black marble 22 times. What is the empirical probability of the blue marble?
a 0.11
b 0.225
c 0.315
d 0.35 - ANSWER-0.35
Questions & Answers Correct 100%
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 - ANSWER-1/6
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?
Age
18−25 26−44 45+ Total
Male 75 200 125 400
Female 50 225 100 375
Total 125 425 225 775
a 0.16
b 0.29
c 0.42
d 0.55 - ANSWER-0.29
The table below shows the breakdown of workers at a business. What is the probability
that a randomly selected 18−25 year old is male (to the nearest hundredth)?
Age
18−25 26−44 45+ Total
Male 75 200 125 400
Female 50 225 100 375
Total 125 425 225 775
a 0.48
b 0.52
c 0.56
d 0.60 - ANSWER-0.60
The probability that Jimmy attends school on any given day is 0.98 . The probability
Jimmy misses a day of school, given that he missed the day before, is 0.5 . What is the
probability that Jimmy misses school on BOTH Tuesday and Wednesday?
a 0.0004
, b 0.01
c 0.02
d 0.04 - ANSWER-0.01
The following table shows the percentage of events at an arena.
Basketball 26%
Hockey 19%
Concert 18%
Table Tennis 9%
Other 28%
What is the disjoint probability of having a basketball or hockey game at the arena?
a 27%
b 37%
c 45%
d 55 - ANSWER-45%
A game has a 10 -sided fair die. What is the probability of rolling an even number or a
number less than 5 ?
a 1/10
b 3/10
c 7/10
d 9/10 - ANSWER-7/10
A survey on favorite pizza topping was given: 33% said cheese was their favorite
topping, 25% said pepperoni, 15% said sausage, and 27% said other. If two people are
picked at random and replaced, what is the probability of picking two people that like
cheese? Round your answer to a whole number.
a 0%
b 11%
c 33%
d 66% - ANSWER-11%
There was a marble drawn from a bag in an experiment and placed back in the bag
repeatedly. A red marble appeared 45 times, a blue marble 70 times, a green marble 63
times, and a black marble 22 times. What is the empirical probability of the blue marble?
a 0.11
b 0.225
c 0.315
d 0.35 - ANSWER-0.35
