Simple Complement Probability

Quiz
•
Mathematics
•
7th Grade
•
Hard
Anthony Clark
FREE Resource
14 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
P(not A) =
*Remember to simplify.*
6/8
3/4
2/8
1/4
Answer explanation
To find P(not A), subtract P(A) from 1. Since P(A) = 1/4, P(not A) = 1 - 1/4 = 3/4. Therefore, the correct answer is 3/4.
2.
DROPDOWN QUESTION
1 min • 1 pt
A box contains 4 red pencils, 6 blue pencils, 5 black pencils, and 3 green pencils. The best description of the likelihood of selecting a blue pencil at random from the box is (a) .
unlikely
impossible
equally likely
likely
certain
Answer explanation
The best description of the likelihood of selecting a blue pencil at random from the box is unlikely because there are only 6 blue pencils out of a total of 18 pencils in the box.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following best describes the likelihood of the spinner landing on a number less than 6?
impossible
unlikely
equally likely
likely
certain
Answer explanation
The likelihood of the spinner landing on a number less than 6 is 'likely' because there are 5 numbers less than 6 on the spinner, making it a probable outcome.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The likelihood that an event will occur
Outcome
Probability
Experiment
Certain
Answer explanation
The likelihood that an event will occur is referred to as Probability, making it the correct choice among the options provided.
5.
LABELLING QUESTION
1 min • 5 pts
Please label the Probability number line.
Unlikely
Likely
Certain
Impossible
Equally Likely
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following best describes the likelihood of the spinner landing on an even number?
impossible
unlikely
equally likely
likely
certain
Answer explanation
The spinner landing on an even number is equally likely because there are an equal number of even and odd numbers on a standard spinner.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following expressions would be used to calculate the complement of an event occurring?
P(event) - 1
P(event 1) x P(event 2)
P(event)/possible outcomes
1 - P(event)
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