Predictions
If you flip a coin 12 times, what is the best prediction possible for the number of times it will land on heads?
There are 5 red marbles, 6 blue marbles, 7 marbles, and a coin. What is the probability of picking out the red marble and flipping a coin and landing on heads.
5/18 x 1/2
5/36
Restaurants often slip takeout menus under Maeś apartment door. So far, Mae has collected 18 menus, including 4 for Japanese food.
What is the probability that one of Maeś takeout menus, selected at random, will be from a Japanese restaurant?
Write your answer as a fraction or whole number.
2/9
Lillian is sitting on a bench in the mall. She noticed that 3 out of the last 15 men who walked by had a beard. What is the experimental probability that the next man to walk by will have a beard?
Write your answer as a fraction or whole number.
3/15
Jacks gym class is playing soccer this month. Every day, the teacher randomly splits the class into 2 teams.
Jack and his best friend, Levi, notice that they're on the same team about half of the time. How likely is it for the boys to be on the same team for 5 days in a row? Which simulation could be used to fairly represent the situation?
A: Flip a pair of coins 5 times. Each time the coins both land on heads, it represents the boys being on the same team
B: Create a spinner with 5 equal sections, each labeled with a different number from 1 to 5. Spin the spinner 2 times. Each time lands on an even number. it represents the boy being in the same team.
C: Roll a six side die 5 times. Each time an odd number appears it represents the boys being on the same team
The answer is C
The spinner has 12 equal sections:5 sections that are pink, 3 sections that are green, 3 yellow sections, and 1 blue section. You spin the spinner 60 times. what is the best prediction possible for the number of times it will land on pink?
5/12 x 60 = 25
There are 6 pieces of fruit in a basket, including 3 bananas.
What is the probability that a randomly selected piece of fruit will be a banana?
Write your answer as a fraction or whole number.
1/2
A florist sold 6 flower bouquets yesterday, including 3 daisy bouquets. What is the experimental probability that the next bouquet sold will be a daisy bouquet?
Write your answer as a fraction or whole number.
3/6 or 1/2
Baldwin's neighbor made a variety of fruit pastries for the annual neighborhood block party. About half of the pastries have a peach filling, Baldwin's favorite flavor. If Baldwin takes 3 pastries, how likely is it for all of them to have a peach filling? Which simulation could be used to fairly represent the situation?
A: Flip a pair of coins 3 times. Each time the coins land on tails it represents a pastry with a peach feeling.
C: Roll a six sided die 3 times. Each time an odd number appears it represents a pastry feeling.
The answer is C
If you roll a 6-sided die 72 times, what is the best prediction possible for the number of times you will roll a two?
1/6 x 72= 12
Answer: 12
4/52 + 4/52
8/15 or 2/13
The basket of golf balls at a miniature golf course contains 12 golf balls, of which 2 are purple.
What is the probability that a randomly selected golf ball will be purple?
Write your answer as a fraction or whole number.1
1/6
There are 8 children in Sophie's preschool class. During free time yesterday, 1 of them chose to read books. What is the experimental probability that a randomly selected preschooler would choose to read books today?
Write your answer as a fraction or whole number.
1/8
On her way out of the toy store, Janelle stops to get 2 gumballs from the giant gumball machine. Her favorite flavor is blue raspberry, but only about 30% of the gumballs in the machine are blue. How likely is it that both of the gumballs Janelle gets will be blue?Which simulation could be used to fairly represent the situation?
A: Roll a six sided die 2 times. Each time a 2 appears it represents a blue gumball
B: Use a computer to randomly generate a pair of number from 1 to 10. Each time an even number appears it represents a blue gumball
C: put 3 blue marbles, and 7 yellow marbles in a bag. Pick a marble then return it to the bag 2 times. Each time a blue marble appears it represents a blue gumball
C
If you roll a 6-sided die 84 times, what is the best prediction possible for the number of times you will roll a three?
14
You pick a card from a hat there are two cards. One card has the number one on it and the other one has the number 2. I rolled the die too. What is the probability of picked the card that has the number 2 on it and rolling the die that has the number 6.
1/2 x 1/6
1/12
Jeremiah owns 16 T-shirts, 8 of which are yellow.
If Jeremiah randomly selects a T-shirt to wear, what is the probability it will be yellow?
Write your answer as a fraction or whole number.
1/2
A T-shirt stand on the boardwalk recently sold 6 purple shirts and 9 shirts in other colors. What is the experimental probability that the next shirt sold will be purple?
Write your answer as a fraction or whole number.
2/5
On her way out of the toy store, Janelle stops to get 2 gumballs from the giant gumball machine. Her favorite flavor is blue raspberry, but only about 30% of the gumballs in the machine are blue. How likely is it that both of the gumballs Janelle gets will be blue?
Janelle records the results by writing "B" for a blue marble and "Y" for a yellow marble. Here are the results of 20 trials:
YY YB YY YY BY YB YY BB BY YY YY YB YY YY BY YY BY YY BY YY
Based on Janelle's results, what is the probability that both of the gumballs will be blue?
5%
There is a spinner that has 11 equal sections: 7 sections are yellow and 4 sections are green. If you spin the spinner 11 times, what is the best prediction possible for the number of times it will land on green?
4/11 x 11 = 4
You roll a six-sided die and pick a card out of 2 cards one card has the number 5 and the other one has a 6. How many different sums are possible?
7
You spinner the spinner which has 4 equal sections. Each section has a number.
The first section: 1
Second section: 2
Third section: 8
Fourth section: 5
What is P(5)
Write you answer as percentage
25%
Leah works at an appliance store. She recorded her recent sales.
washing machines 3
dishwashers 1
ovens 6
clothes dryers 5
What is the experimental probability that the next appliance Leah sells will be an oven?
Write your answer as a fraction or whole number.
2/5