2/25 Probability

2/25 Probability

9th - 12th Grade

10 Qs

quiz-placeholder

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2/25 Probability

2/25 Probability

Assessment

Quiz

Mathematics

9th - 12th Grade

Easy

Created by

Courtney VanRoten

Used 2+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Probability is defined as:

The measure of determining all possible outcomes of an event.

The measure of how likely an event is to occur.

The determination of the number of favorable outcomes of an event.

The determination if an event will occur.

Answer explanation

Probability is the measure of how likely an event is to occur.

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

The set of all possible outcomes is called

Likelihood

Probability

The sample space

Ratio

Answer explanation

The set of all possible outcomes is called the sample space.

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

For equally likely outcomes, the theoretical probability of an event is the ratio of

The number of favorable events to the total number of outcomes possible.

The number of outcomes possible to the number of favorable events.

Answer explanation

Media Image

For equally like outcomes, the theoretical probability of an event, P(E), is the ratio of the number of favorable outcomes t the total number of outcomes possible.

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

A letter in the word 'MATH' is randomly selected. What is the probability of selecting a vowel?

14\frac{1}{4}

24\frac{2}{4}

34\frac{3}{4}

44\frac{4}{4}

Answer explanation

Media Image

The favorable outcome would be to select a vowel (a). There are four letters in the word math so there are four possible outcomes (m,a,t,h). Therefore, the probability of selecting a vowel is 1/4.

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

A jar contains 7 purple marbles and 12 blue marbles. What is the probability that a randomly selected marble is purple?

712\frac{7}{12}

127\frac{12}{7}

719\frac{7}{19}

197\frac{19}{7}

Answer explanation

Media Image

The favorable outcome would be to select a purple marble. There are 7 purple marbles. There are 19 marbles in total (7+12) therefore there are 19 possible outcomes. The probability of choosing a purple marble is 7/19.

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

The complement of an event is...

The sample space.

The probability of multiple events happening.

The probability of an event happening.

The probability of an event NOT happening.

Answer explanation

Media Image

The complement of an event is the probability of an event NOT happening.

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

A letter in the word 'MATH' is randomly selected. What is the probability that you will NOT select a vowel?

14\frac{1}{4}

24\frac{2}{4}

34\frac{3}{4}

44\frac{4}{4}

Answer explanation

Media Image

The favorable outcome would be to select a vowel (a). There are four letters in the word math so there are four possible outcomes (m,a,t,h). Therefore, the probability of selecting a vowel is 1/4.  This question asks for the complement of that event.  Therefore the complement is 1 - 1/4 or 3/4. 

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