BASIC PRACTICE OF STATS-LL W/SAPLINGPLU
BASIC PRACTICE OF STATS-LL W/SAPLINGPLU
8th Edition
ISBN: 9781319216245
Author: Moore
Publisher: MAC HIGHER
Question
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Chapter 25, Problem 25.20CYS
To determine

To find: The percentage of current smokers in the sample

Expert Solution & Answer
Check Mark

Answer to Problem 25.20CYS

The correct option is (b): 9.37%.

Explanation of Solution

Reason for correct answer:

The survey results for the two questions “Would you say your health is excellent, very good, good, fair, or poor?” and “Do you smoke cigarettes now?” are tabulated below:

  Current Smoker Total
  Yes No  
Excellent 25 484 509
Very good 115 1,557 1,672
Good 145 1,309 1,454
Fair 90 545 635
Poor 29 11 40
Total 404 3,906 4,310

The percentage of current smokers in the sample is as follows,

Percentage=Number of currect smokersTotal number of subjects×100=4044,310×(100)=(0.09374)×(100)=9.37

Thus, the correct option is (b) 9.37%.

Reason for incorrect answers:

The percentage of current smokers in the sample is 9.37%. Hence the options (a) 4.91% and (c) 9.97% are incorrect.

Conclusion:

Thus, the percentage of current smokers in the sample is 9.37%.

Statistics Concept Introduction

Introduction:

Percentage:

The proportion for each category is obtained by the ratio of number of observations in the category and the total number of observations. Hence, the percentage for each category is the product of its corresponding proportion and 100.

Thus, Percentage=Number ofobservations in each categoryTotalnumberof observations×(100)

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