Probability

Which of these statements is best described as unlikely?

• Your hair will grow 5 inches in one day.
• The sun will rise in the north tomorrow.
• You roll an even number on a standard dice.
• A meteorite lands next to you. 

Tags

CCSS.7.SP.C.5

Write 17/20 as a decimal. Describe the probability. 

• 0.85 and as likely as not
• 0.85 and Likely
• 1.17 and Certain
• 1.17 and Unlikey

The probability that a student guesses the correct answer to a five-choice multiple choice question is P(correct)=0.2. How many correct answers should a student expect to guess on a test with 80 five-choice multiple choice questions?

• 9
• 12
• 400
• 16

The probability of parents passing on a particular trait to their child is 0.35. Write this probability as a percent.

• 33%
• 35%
• 38%
• 19%

Tags

CCSS.7.SP.C.5

Write 0.35 and a simplified fraction.

• 2/5
• 7/18
• 7/20
• 2/9

36% is what liklihood?

• Unlikely
• As Likely as Not
• Likely
• Certain

Tags

CCSS.7.SP.C.5

You have one spin of the spinner. What is the sample space for this action? How many outcomes are there in the sample space?

• The sample space is 2, 5, 7. There are 3 outcomes.
• The sample space is 2, 5, 7, 9. There are 4 outcomes.
• The sample space is 2, 2, 5, 5. There are 4 outcomes. 

To meet a deadline, a manager, chooses some workers to come in on a Saturday. The table shows the shirts five employees are wearing that day. Identify the outcomes for the following event. 
EVENT: The worker is wearing a stripe shirt. 

• Worker 1 and Worker 4.
• Worker 1, 2, 3,4, and 5.
• Worker 1, 2, and 3.
• Worker 3 

Roland is picking out a shirt. He has a blue shirt, a yellow shirt, and a green shirt. Roland is going to pick a shirt at random and wants to know what the chance is he will pick a white shirt. What is the sample space?

• Picking a shirt.
• Blue, yellow, and green shirt.
• Picking a white shirt.

Classify the following as an action, sample space or event.Tossing three fair coins.

• Action
• Event
• Sample Space