# Cameron University Statistics Worksheet

2/27/22, 2:32 PMMyOpenMath

Chapter 4 HW (Part 1)

Joao Guilherme Guercheski Duleba

Question 1

1/1 pt

1

19

0/1 pt

3

19

Can the value

√7

be a probability?

yes

no

Question 2

If you randomly select a card from a well-shuffled standard deck of 52 cards, what is the probability

that the card you select is a club or 10? (Your answer must be in the form of a reduced fraction.)

Question Help:

Video 1

Video 2

Question 3

0/1 pt

3

19

3

19

If you randomly select a letter from the phrase “Brandon loves to eat at Red Robin,” what is the

probability that you select a consonant? (Your answer must be in the form of a reduced fraction.)

Question 4

0/1 pt

Giving a test to a group of students, the grades and gender are summarized below

Male

Female

Total

A

10

8

18

B

12

3

15

C

17

9

26

Total

39

20

59

If one student was chosen at random,

find the probability that the student was female.

Give your answer as a fraction or decimal.

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Question 5

0/1 pt

3

19

0/1 pt

3

19

Giving a test to a group of students, the grades and gender are summarized below

Male

Female

Total

A

19

6

25

B

18

20

38

C

10

15

25

Total

47

41

88

If one student is chosen at random,

Find the probability that the student did NOT get an “C”

Question Help:

Video 1

Video 2

Question 6

Suppose you roll a special 26-sided die. What is the probability that the number rolled is a “1” OR a “2”?

Question 7

0/1 pt

3

19

3

19

A card is drawn randomly from a standard 52-card deck. Find the probability of the given event.

(a) The card drawn is 9

The probability is :

(b) The card drawn is a face card (Jack, Queen, or King)

The probability is :

(c) The card drawn is not a face card.

The probability is :

Question 8

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0/1 pt

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A ball is drawn randomly from a jar that contains 3 red balls, 4 white balls, and 9 yellow ball. Find the

probability of the given event.

(a) A red ball is drawn;

The probability is :

(b) A white ball is drawn;

The probability is :

(c) A yellow ball is drawn;

The probability is :

Question 9

0/1 pt

3

19

0/1 pt

3

19

3

19

What is the probability that if 6 letters are typed, no letters are repeated?

The probability that no letters are repeated is

Question Help:

.

Video

Question 10

If the probability of an event is

59

, what is the probability of the event not happening?

80

Write your answer as a simplified fraction.

Question Help:

Video

Question 11

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0/1 pt

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A deck of Uno cards has 4 colors (suits): Red, Yellow, Green, Blue

Each color has cards numbered 1 to 9,

so the total number of these cards = 4*9 = 36

(An Uno deck also has other, special cards, but for this question, those special cards are removed for the

deck. Only the numbered cards are used.)

a) Event E = Randomly selecting an UNO card that is Red.

What is the probability of event E?

(Enter a fraction; it does not have to be reduced.)

b) Event F = Randomly selecting an Uno card that is some number from 1 to 8 of any of the 4 colors.

What is the probability of event F?

(Enter a fraction; it does not have to be reduced.)

c) How many cards are in the intersection of events E and F?

d) P(E and F) = the probability of choosing a card in the intersection of events E and F: P(E and F) = ?

e) Let event G = E or F.Use the General Addition Rule to compute P(G): P(G) = P(E) + P(F) – P(E and F)

f) How many cards are in event G?

Question Help:

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Question 12

0/1 pt

3

19

Giving a test to a group of students, the grades and gender are summarized below

Male

Female

Total

A

4

20

24

B

6

8

14

C

9

10

19

Total

19

38

57

If one student is chosen at random,

Find the probability that the student was female OR got a(n) “B”. (Please enter a reduced fraction.)

Question 13

0/1 pt

3

19

3

19

Use the spinner below to find the probability of getting the following number after 1 spin.

P(multiple of 4) =

Question 14

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(Please enter a reduced fraction)

0/1 pt

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A store gathers some demographic information from their customers. The following chart summarizes

the age-related information they collected:

Age

Number of Customers

67

94

73

50

76

52

< 20
20-29
30-39
40-49
50-59
≥ 60
One customer is chosen at random for a prize giveaway. Please enter reduced fractions
What is the probability that the customer is at least 40 but no older than 60?
What is the probability that the customer is at least 40?
What is the probability that the customer is either at least 50 or younger than 20?
Question 15
0/1 pt
3
19
0/1 pt
3
19
The letters in the word MATHEMATICS are arranged randomly.
What is the probability that the first letter is E?
What is the probability that the first letter is M?
Question 16
You pick 2 digits (0-9) at random without replacement, and write them in the order picked.
What is the probability that you have written the first 2 digits of your phone number? Assume there are
no repeats of digits in your phone number.
Give your answer as a fraction.
Question Help:
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Question 17
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0/1 pt
3
19
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From a group of 9 people, you randomly select 5 of them.
What is the probability that they are the 5 oldest people in the group?
Give your answer as a fraction
Question Help:
Video
Question 18
0/1 pt
3
19
A bag contains 6 red marbles, 7 white marbles, and 8 blue marbles. You draw 4 marbles out at random,
without replacement. What is the probability that all the marbles are red?
The probability that all the marbles are red is
.
What is the probability that exactly two of the marbles are red?
The probability that exactly two of the marbles are red is
.
What is the probability that none of the marbles are red?
The probability of picking no red marbles is
Question 19
.
0/1 pt
3
19
A poker hand consisting of 6 cards is dealt from a standard deck of 52 cards. Find the probability that
the hand contains exactly 3 face cards.
The probability is
Question 20
0/1 pt
3
19
You own 16 CDs. You want to randomly arrange 5 of them in a CD rack. What is the probability that the
rack ends up in alphabetical order?
Question Help:
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