Probability Quiz #1 Review

The questions on a multiple choice test each have 6 answer choices. Which model can be used to simulate randomly selecting the correct answer on a 20 question multiple choice test?

• rolling a six-sided number cube 6 times
• rolling a six-sided number cube 20 times
• spinning a spinner with 4 equal sized sections 4 times
• choosing 1 marble in a bag of 20 different colored marbles

A certain brand of TV has a 50% chance of being defective. Which model could be used to determine the probability that when two TVs are chosen, they will both be defective?

• spin a spinner with 4 equal sections
• roll a die twice
• flip a coin twice
• flip a coin, then roll a die

Which is the best way to represent answering 25 multiple-choice questions with 4 choices for each answer?

• spin a spinner with four sections 25 times
• roll a die 25 times
• flip a coin 25 times
• roll a die 4 times

A cereal company is placing one of 6 different tickets into its boxes of cereal. If each ticket is equally likely to appear in a box of cereal, which model could be used to simulate the tickets you would find in 50 boxes of cereal?

• a coin that is flipped 50 times
• a spinner that has 4 sections that is spun 50 times
• a number cube that is rolled 50 times
• a coin is flipped and a number cube is rolled 50 times 

The Law of Large Numbers deals with what?

• Running for a long time.
• Probability.
• Geometry shapes.
• Algebraic Equations.

If you flip a coin 40 times and get heads every time.  What is the likelihood of flipping a tails the 41st time? 

• 1/41
• 40/41
• 1/2

If you roll to dice, what is the likelihood that you will roll two numbers that are the same?

• 1/6
• 2/36
•  1/36
• 1/12

If you have a color wheel and there are four colors, what is the likelihood you will spin the color you want?

• 4
• 1
• 2/3
• 1/4

If you are spinning a color wheel with seven colors on it and you have 100 spins to get a red.  After 99 spins you have gotten every color but red.  What is the chance you will spin a red on the 100th spin?

• 1
• 1/100
• 6/7
• 1/7

True or False:  The more you roll a die, the more likely you are to get a higher number.

• True.
• False.