Probability Basics
Probability can be expressed as a fraction between the numbers ______ and ______.
0 and 1
What is the probability of you rolling a dice and landing on a 2?
1/6
You have a bag with 10 blue marbles, 3 green marbles, 2 red marbles, and 5 yellow marbles. What is the probability that you will randomly select a green marble?
3/20
You flip a coin 3 times. What is the probability of it landing on heads all 3 times?
There is a 30% chance of rain tomorrow. Describe this event using one of the following words:
certain, likely, equally likely, unlikely, impossible
unlikely
What is the complement of the probability of you rolling a dice and landing on a 5 or 6?
2/3
You have a bag with 10 blue marbles, 3 green marbles, 2 red marbles, and 5 yellow marbles. What is the complement of the probability that you will randomly select a red marble?
9/10
At Braum's, they have 25 different flavors of ice cream. Out of the last 10 customers who have walked in, 7 have ordered Chocolate Chip Cookie Dough. What is the experimental probability that someone will order Chocolate Chip Cookie Dough?
7/10
You roll a dice and flip a coin. List the sample space of this event.
1H, 2H, 3H, 4H, 5H, 6H, 1T, 2T, 3T, 4T, 5T, 6T
What is the probability of you rolling two dice and landing on a 2 and an even number?
You have a bag with 10 blue marbles, 3 green marbles, 2 red marbles, and 5 yellow marbles. What is the probability that you will randomly select a green marble, put it back, then randomly select a blue marble?
3/40
You flip a coin 100 times, and 31 of those land on tails. What is the experimental probability of it landing on heads?
69/100
Maria wants to find the local's favorite grocery store. Which of the following is the best group to survey?
The customers at Smith's
The employees at Harmon's
The teachers at her school
The people from the neighborhood next to Lee's
The teachers at her school
You roll a dice and flip a coin. What is the probability of you rolling a number less than 5 and flipping a heads.
1/3
You have a bag with 10 blue marbles, 3 green marbles, 2 red marbles, and 5 yellow marbles. What is the probability that you will randomly select a yellow marble, put it back, then select a green or red marble?
1/16
At Jersey Mike's, there are 45 different possible sandwiches that can be created. The probability of someone ordering a sandwich with turkey is 1/3. What is the complement of this event? (describe it and write the probability)
someone ordering a sandwich without turkey = 2/3
You walk into Subway to get a sandwich. You the following choice:
Bread: wheat or white
Meat: turkey, ham, roast beef
Cheese: swiss, cheddar, american
Condiments: mayo or mustard
Veggies: tomatoes, lettuce, onions, pickles
How many possible outcomes are there if you randomly select one of each category?
144
You roll 3 dice. What is the probability of rolling a 5, 7, and 3?
0
You have a bag with 10 blue marbles, 3 green marbles, 2 red marbles, and 5 yellow marbles. In three draws you select a yellow, a red, and another yellow. What is the experimental probability that you will select a yellow?
2/3
A car salesman has sold 50 cars this weekend. 22 have been black cars, 10 were blue, 13 were red, and 5 were silver. What is the complement experimental probability that the next car sold will be blue?
4/5