Probability Modes

A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?

• 3/10

• 3/9

• 1/9

• 1/3

In a cup are the numbers 1 - 20. Find the theoretical probability of 
picking an even number. 

• 10/20

• 1/2

• 1/20

• 20/20

What does "mode" mean?

• average

• middle

• repeats the most

• variation

The following M & M colors are in the bowl:

4 yellow, 6 orange, 3 green, 5 blue, 2 brown

What is the probability of selecting a brown candy?

• 2/18

• 1/9

• 2/20

• 1/10

Probability model

• a description of some random process that consists of two parts, the sample space and the probability for each outcome

• any collection of outcomes from some random process

A sports bag contains 3 tennis balls, 4 baseballs, and 8 golf balls. Each is equally likely to be chosen. Which of the following models could be used to simulate this situation?

• flipping a coin fifteen times

• spinning a spinner with three equal sections

• choosing from 3 red marbles, 4 yellow marbles, and 8 blue marbles

• rolling a number cube labeled one through six fifteen times

Match the following probability types to their definitions.

• Independent probability

• When two events do not change each other's probability

• Theoretical probability

• When one event changes the entire probability space for the next event

• Experimental probability

• What actually happened based on our data

• Dependent probability

• What we think is going to happen based on math when we do something like flip a coin

A bag contains 4 red marbles, 7 blue marbles and 5 green marbles. what is the Theoretical probability of NOT choosing a red marble if the answer was to be simplified.

• 4/16

• 3/16

• 3/4

• 12/16

On a 6-sided die, which is more likely?

• Rolling an odd number

• Rolling an even number

• They are all equally likely.

• Rolling a prime number

If you spun the spinner 1 time, what is the probability it would land on a black piece?

• 1 / 7

• 2 / 7

• 3 / 7

• 4 / 7