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Elementary Statistics: A Step By Step Approach | 9th Edition | ISBN: 9780073534985 | Authors: Allan Bluman
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A social organization of 32 members sold college

Chapter 4, Problem 20E

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QUESTION:

Problem 20E

A social organization of 32 members sold college sweatshirts as a fundraiser. The results of their sale are shown below.

No. of sweatshirts

No. of students

0

 2

1–5

13

6–10

 8

11–15

 4

16–20

 4

20+

 1

Choose one student at random. Find the probability that the student sold

a. More than 10 sweatshirts

b. At least one sweatshirt

c. 1–5 or more than 15 sweatshirts

Questions & Answers

QUESTION:

Problem 20E

A social organization of 32 members sold college sweatshirts as a fundraiser. The results of their sale are shown below.

No. of sweatshirts

No. of students

0

 2

1–5

13

6–10

 8

11–15

 4

16–20

 4

20+

 1

Choose one student at random. Find the probability that the student sold

a. More than 10 sweatshirts

b. At least one sweatshirt

c. 1–5 or more than 15 sweatshirts

ANSWER:

Solution:

Step 1 of 4:

A 32 member social organization sold college sweatshirts as a fundraiser.

No. of sweatshirts

No. of students

Cumulative frequency

0

2

2

1–5

13

15

6–10

8

23

11–15

4

27

16–20

4

31

20+

1

32

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