01/20-21/22 QUIZ 5.2 Rules of Probability

You flip a nickel three times.

Find the probability that all flips will land on tails.

• 1/2

• 1/4

• 1/6

• 1/8

You pick a marble from this bag.
What is the probability you will choose either a black or white marble?

• 3/5
• 9/100
• 1/10
• 2/5

The probability of it raining today is 30%.  What is the probability that it will NOT rain?

• 30%
• 70%
• 100%
• 0%

Probability can be written as ...

• a fraction
• a decimal
• a percent
• all of the above

What is the probability of spinning green or blue?

• 0
• 5/12
• 1/2
• 3/4

Probability is ...

• the chance that some event will occur.
• a game that involves coins.
• a guarantee.

Dice have six faces, showing 1 to 6 pips (spots). If a die is balanced, all six faces are equally likely. What must be the probability of each face?

• 1/10, or 0.10.
• 1/6, or 0.167.
• 2/10, or 0.20.
• could be any number between 0 and 1.

If a coin has 0.6 probability coming up tails, the probability that it comes up heads is

• 0.5 
• -0.2 
• 0.4
• 0.6 

The probability of choosing a Freshman or Sophomore out of a group of students.

• Mutually Exclusive   
• Non Mutually Exclusive

Probability can be expressed as a number between_____ and _____.

• 0 and 100
• 0 and 10
• 0 and 1
• -1 and 1