Probability

Danny tossed a coin 30 times.  Heads turned up 18 times.  What was the experimental probability of getting heads as a percent?

• 18%
• 60%
• 30%
• 15%

What is the probability of getting a factor of six or a five when rolling a fair number cube one time?

• 1/6
• 1/2
• 5/6
• 1/3

Describe the likelihood of each of the following events: A.  Drawing a green marble from a bag containing three red marblesB. A fair coin landing on tails C.  Rolling two dice and getting an odd number, then an even number

• A. Likely B. Certain C. Unlikely to happen
  
• A. Impossible B. Equally likely as unlikely to happen C. Unlikely to happen
  

A paper bag contains red and blue marbles.  Without looking, Evan drew a marble from the bag, recorded the color and replaced it.  In 50 trials, he got 32 red marbles and 18 blue marbles.  Which statement CANNOT be true about the contents of the bag?

• There are more blue marbles than red marbles
• There are equal numbers of red and blue marbles
• There are more red marbles than blue marbles
• There are no blue marbles

A bag contains one red marble and one green marble.  You pick a red marble and you put it back.  If you randomly select another marble, what is the probability that it will be green?

• 1/8
• 1/4
• 1/6
• 1/2

Michael has a spinner that is divided into 8 congruent sections, with three shaded in.  If he spins the pointer 48 times, predict how many times can he expect the arrow to land in the shaded area.

• 15
• 20
• 6
• 18

An experiment consists of spinning a spinner. Use the results in the table to find the experimental probability that the spinner lands on purple. Express your answer as a fraction in simplest form.

• 2/5
• 12/30
• 8/30
• 2/3

What is the experimental probability of not landing on yellow?

• 66%
• 25%
• 10%
• 33%

Let’s Make a Meal is a restaurant that lets customers design their own meals by choosing items from two categories: one entrée and one drink for $2.99. Entrees include chicken sandwich, chicken nuggets, hamburger, turkey sandwich, or slice of pepperoni pizza and drinks include soda, tea, lemonade, or coffee. How many possible outcomes can be designed?

• 5
• 10
• 15
• 20

A number cube is rolled two times. What is the probability of rolling a sum of 10?

• 1/6
• 1/12
• 2/5
• 1/25