FINAL EXAM - MATH MODELS

What is the probability of spinning green?

• 6/12 or 1/2

• 3/12 or 1/4

What is the probability of spinning red?

• 3/4

• 5/12

The letters that form the word ALGEBRA are placed in a bowl. What is the probability of choosing a letter other than “A”?

• 2/7

• 5/7

A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Draws are made without replacement.P(both marbles are purple)

**Remember to multiply your individual probabilities**

• 2/9

• 1/5

A jar contains 3 white chips, 6 purple chips, and 1 black chip. Chips are selected randomly one at a time, and are not replaced.

P(white, then purple)

• 9/50

• 1/5

A bag contains 30 pieces of candy. There are 15 grape, 7 cherry, 3 lemon, 5 strawberry. What is the probability of drawing a lemon?

• 3

• 1/10

P(not A) =

*Remember to simplify.*

• 2/8 or simplified 1/4

• 6/8 or simplified 3/4

Clara picks a marble at random, puts it back, and then picks another marble at random.

• Dependent

• Independent

• A
• B
• C
• D

• 2/5
• 3/5
• 1/3
• 2/3