Math 7 Unit 6 Probability

Simple Probability

100

There is 1 slice of vanilla cake, 5 slices of chocolate cake, and 3 slices of cookie cake. What is the probability that Couzin will choose vanilla cake?

P(vanilla cake) = 1/9

200

What is the definition for simple probability?

the calculation of an outcome or the chance of an event ever happening

300

Can the words OR/AND be used in simple probability problem? Why or why not?

No, because the words OR/AND indicate a compound problem, not a simple probability problem.

400

 A bag of beads contains 4 green, 8 red, 1 blue, and 2 white. What is the probability of not picking a red?

P( not a red) = 7/15

500

A jar contains 100 marbles, identical except that 30 are red, 20 black, 5 green and the rest white. If a marble is taken from the jar at random, what is the probability that the marble is white?

P(white) = 9/20

Theoretical Probability

100

What is the theoretical probability that you will land on heads if you flip a coin twice?

P(heads) = 1/2 or 50%

200

What is the theoretical probability of choosing any queen from a deck of cards?

P(queen) = 1/13

300

If there is a bag that has 3 red balloons, 12 blue, and 28 green, theoretically, which balloon would you least expect to pull out and why?

 The red balloon because it is the least amount of a color in the bag of balloons compared to the blue and green balloons.

400

If a spinner has 3 striped sections, 1 blank section, and 2 dotted sections what is the probability of getting a dotted section?

P(dotted section) = 1/3

500

What is the theoretical probability of getting a jack, queen, and king from a deck of cards with replacement. Don't simplify.

P(jack, queen, or king) = 64/140,608

Experimental Probability

100

There was a spinner that had the numbers 1,2,3, and 4. If the Bobkin spinned the spinner, what is the probability he will land on a number greater then 2?

P( greater then 2) = 1/2 or 50%

200

What is the probability of rolling a dice and getting a number less than 6?

P(less than six) = 5/6

300

What is the probability of spinning a 2 on a spinner labeled 1-5?

1/5

400

A movie is played 5 times. In those 5 times the movie Black Panther is played 3 times. What is the probability of Black Panther being played.

P(Black Panther) = 3/5

500

There are 3 choices of ice cream - vanilla, chocolate and strawberry. If the probability of getting a vanilla is 1/10 and the probability of getting a chocolate is 2/5, what is the probability of getting strawberry?

P(strawberry) = 1/2

Compound Probability

100

If Susan has a bag full of 3 red marbles, 4 blue marbles, and 18 clear marbles, what is the probability that Susan will pick a blue marble, and then a clear marble without replacement.

P(blue, then clear) = 3/25

200

You spin a spinner that has 12 equal-sized sections numbered 1 to 12. What is the probability that you spin a 3 or a 5?

P(3 or 5) = 1/6

300

Susie had four kinds of cookies. She had 4 chocolate chip, 6 sugar cookies, 5 oatmeal cookies, and 3 Oreos. She, Susie, wants one of the Oreos and 3 of the chocolate chips. What is the probability that she will pick these cookies

P(Oreo, then chocolate chip) = 1/102

400

If you roll TWO dice, what is the probability of getting an even number on the first dice and getting a odd on the second dice.

P(even, then odd) = 1/4 or 25%

500

A jar contains 3 caramels, 7 mints, and 4 dark chocolates. What is the probability of selecting a dark chocolate or a caramel?

P(dark chocolate or caramel) = 1/2

Random

100

What is theoretical probability?

A prediction

200

What is experimental probability?

The results

300

What is an independent event?

Something that happens regardless of the events around it

400

What words are used to describe probability?

Impossible, unlikely, likely, Certain

500

What is dependent event?

When the outcome of one event impacts the outcome of another