Percents And Probability Worksheet With Answers - Lesson 12-19 Page 10
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49use the spinner to write each probability as a fraction, decimal and percent.
examPle 3
a. P(yellow)
b. P(green)
c. P(red or green)
s
olutions
Fraction
decimal
Percent
1 _
1 _
a. P(yellow) =
a.
a. 0.25 ∙ 100 = 25%
= 0.25
4
4
2 _
1 _
1 _
b. P(green) =
=
b.
= 0.5
b. 0.5 ∙ 100 = 50%
4
2
2
3 _
3 _
c. P(red or green) =
c.
c. 0.75 ∙ 100 = 75%
= 0.75
4
4
exercises
1.
Give an example of an event which has a probability of 0. Explain why the probability equals 0.
2.
Give an example of an event which has a probability of 1. Explain why the probability equals 1.
Find each probability for one roll of a number cube. Write as a fraction in simplest form.
3.
4.
5.
P(3)
P(1, 4 or 6)
P(even number)
6.
7.
8.
P(0)
P(not 4)
P(2)
A game has 30 cards numbered 1 through 30. The cards are shuffled. one card is picked at random.
Find each probability.
9.
10.
11.
P(20)
P(multiple of 5)
P(even number)
12.
13.
14.
P(31)
P(10, 20 or 30)
P(number greater than 20)
You choose a letter at random from the word ProPortIon. Find each probability.
15.
16.
17.
P(T)
P(R)
P(O)
18.
19.
20.
P(vowel)
P(E)
P(consonant)
21.
a. What is the theoretical probability of a flipped coin landing tails?
b. You flip a coin 40 times. How many times would you expect it to
land tails based on theoretical probability?
c. Are you guaranteed to get tails 20 times? Explain.
22.
Sarah surfs with her friends in Pacific City. Sarah caught 4 waves
out of 20 possible waves to ride in to shore. Find the experimental
probability Sarah will catch a wave.
80
Lesson 13 ~ Probability
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