Deepa rolls a standard six-sided die, numbered from 1 to 6. Which word or phrase describes the probability that she will roll an 8?
a) an equal chance or 50-50
b) unlikely
c) likely
d) impossible
d) impossible
Answer as a percentage (round to the nearest tenth):
In a 12-sheet package of construction paper, there are 5 blue sheets.
What is the probability that you select a color that is NOT blue?
5 are blue.
7 are NOT blue.
7/12 = 0.58333...
about = 58.3%
Of the 12 people who have taken their seats at a seminar, 5 have red hair. What is the experimental probability that the next person to take a seat will have red hair?
5/12 or about 41.7%
If you flip a coin 25 times, what is the best prediction possible for the number of times it will land on tails?
12 or 13 times.
To calculate compound probability, you find the probability of each event and you ______ them.
a. add
b. subtract
c. multiply
d. divide
c. multiply
Nachelle has a bag of candy full of 1 strawberry chew and 19 cherry chews that she eats one at a time. Which word or phrase describes the probability that she reaches in without looking and pulls out a cherry chew?
a) an equal chance or 50-50
b) likely
c) impossible
d) certain
b) likely
Answer as a fraction in simplest terms:
A food company conducted a survey and found that 12 out of 20 people had french toast for breakfast yesterday.
What is the probability that a randomly selected person had french toast for breakfast?
Probability is wins/total
12/20 = 60%
Trevor gets 10 heads when flipping a weighted coin 18 times. What is the experimental probability that the next flip will come up heads?
10/18 or about 55.6%
If you spin this spinner 21 times, how many times would you expect to land on green?
6 times
What is the probability of flipping tails and rolling a four?
1/12 or 8.3%
Jonathan's school is selling 100 raffle-tickets to raise money for a new gymnasium. The grand-prize is a ten-speed mountain bike. Which word or phrase describes the probability that he will win the raffle if he buys 1 ticket?
a) likely
b) certain
c) unlikely
d) impossible
c) unlikely
Ms. D'Angelo's playlist is set to random. What is the probability that the next song will be Hip Hop or K-Pop?
5 + 15 = 20
20/30 = 66.7%
On the last day of a Shakespeare class, an English teacher asked her students which play they liked the best, and she recorded the results to date.
What is the experimental probability that the next student to respond likes Hamlet best?
2/12 or about 16.7%
You select a marble without looking and then put it back. If you do this 18 times, what is the best prediction possible for the number of times you will pick a blue marble?
2 times
You roll two dice at the same time.
What is the probability that the first die lands on 4 and the second die lands on an odd number?
3/36 = 8.3%
Through ten games of basketball this season, Michael has made 50% of his free-throws. Which word or phrase describes the probability that Michael will hit his next free throw?
a) unlikely
b) impossible
c) an equal chance or 50-50
d) likely
c) an equal chance or 50-50
If you pick a marble at random, what is the probability that will you select a marble that is NOT red?
12/15 = 80%
Morning Donuts tracked how many of each type of donut were recently sold.
What is the experimental probability that the next donut sold will be a cake donut?
2/10 or 20%
If you spin this spinner 55 times, how many times would you expect it to land on blue?
About 27 times
If you pick a card at random and spin the spinner, what is the probability that you pick a card with 7 and the spinner lands on the space that is NOT 7?
4/35 = 11.4%
A spinner for a board-game is divided into four equal-sized sections colored red, green, yellow, and blue. If you land on a line between the colors, you keep spinning until you land on a color. Qasim's turn is next. Which word or phrase describes the probability that he will land on a primary color (red or yellow or blue)?
a) likely
b) certain
c) unlikely
d) impossible
a) likely
Consider this spinner: What is the probability of spinning a 2?
0% or impossible
Aubrey's Pie Shop recently sold 6 cherry pies and 14 other pies. What is the experimental probability that the next pie sold will be a cherry pie?
6/20 or 30%
If you spin the spinner 88 times, what is the best prediction possible for the number of times it will not land on blue?
33 times
What is the probability of picking a blue marble and rolling a two?
10/72 or 13.9%