The Basic Practice of Statistics
The Basic Practice of Statistics
7th Edition
ISBN: 9781464142536
Author: David S. Moore, William I. Notz, Michael A. Fligner
Publisher: W. H. Freeman
Question
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Chapter 25, Problem 25.19CYS
To determine

To find: The number of “accidental” injuries from the sample

Expert Solution & Answer
Check Mark

Answer to Problem 25.19CYS

The correct option is (a): 1,552.

Explanation of Solution

Given info:

The survey results were categorized into two categories such “accidental” and “not accidental” are tabulated below:

AccidentalNot accidental
8-13205102
14-18655916
19-22239533
23-303631,008

Reason for correct answer:

The survey results were categorized into two categories such “accidental” and “not accidental” are tabulated below:

AccidentalNot accidental
8-13205102
14-18655916
19-22239533
23-303631,008
Total4043,906

The total number of accidental injuries in the sample is as follows,

(Total number of accidental injuries)=295+655+239+363=1,552

Thus, the correct option is (a) 1,552.

Reason for incorrect answers:

By calculation, the total number of accidental injuries in the sample is 1,552. Hence the options (b) 2,559 and (c) 4,111 are incorrect.

Conclusion:

Thus, total number of accidental injuries in the sample is 1,552.

Statistics Concept Introduction

Introduction:

Total number for a category:

The total number for each category is obtained by adding the number of observations or data points in that category.

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