AnswersMath Models AUnderstanding Probability

Understanding Probability Answers

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If the probability of an event is , what must be the probability of its complement?

Question illustration
A
StartFraction 1 over 7 EndFraction
Option A
B
StartFraction 2 over 7 EndFraction
Option B
C
StartFraction 4 over 7 EndFraction
Option C
D
StartFraction 5 over 7 EndFraction
Option D
2
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What is the probability of the complement of spinning an even number by using the spinner below?

Question illustration
A
StartFraction 3 over 8 EndFraction
Option A
B
One-half
Option B
C
StartFraction 5 over 8 EndFraction
Option C
D
StartFraction 7 over 8 EndFraction
Option D
3

Which value cannot represent the probability of an event occurring?

A
StartFraction 1 over 100 EndFraction
Option A
B
0.29
C
85%
D
Three-half
Option D
4

What is the probability of the complement of rolling a number less than 5 by using a six-sided die?

A
StartFraction 1 over 6 EndFraction
Option A
B
One-third
Option B
C
Two-fifths
Option C
D
Two-thirds
Option D
5

If P(not yellow) = , which best describes the probability of the complement of the event?

Question illustration
A
P(yellow) =
Option A
B
P(yellow) =
Option B
C
P(not yellow) =
Option C
D
P(not yellow) =
Option D
6

A bag contains 5 red marbles, 3 green marbles, 2 purple marbles, 2 orange marbles, and 1 blue marble.Which color marble is less likely to be picked than purple?

Question illustration
A
blue
B
orange
C
green
D
red
7

The probability of choosing an apple-flavored juice box out of the refrigerator without looking is 1. Which term best describes this probability?

A
impossible
B
unlikely
C
likely
D
certain
8

What is the probability of the spinner landing on 2?

Question illustration
A
StartFraction 1 over 8 EndFraction
Option A
B
One-fourth
Option B
C
One-third
Option C
D
One-half
Option D
9

What is the probability of an event that is impossible?

Answer not available
10

Which best describes the complement of spinning any number less than 3?

Question illustration
A
spinning a 4
B
spinning a 3 or 4
C
spinning a 1 or 2
D
spinning a 1, 2, or 3

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