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13. Does the last column of percentages in the table add up to 100%?Check the researchers' calculation of one of the percentages by dividing the number who reported no abstinence by the total number in the sample and multiplying that number by 100. To two decimal places, what answer do you get?

13. Does the last column of percentages in the table add up to 100%?Check the researchers' calculation of one of the percentages by dividing the number who reported no abstinence by the total number in the sample and multiplying that number by 100. To two decimal places, what answer do you get?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Problem #2. Little is known about heroin and cocaine use in Afghanistan. Opium was known to the ancient Persians and has traditionally been used for recreation, pain relief, and treatment of mental disorders. Data were gathered from 306 consecutive addicts who sought treatment an identified addicts center from July to September in a recent year. An interview was conducted with the subject and a close relative. The data collected revealed that the mean (average) age of the subject was 37.0 years; that 97.7% were male, of whom 73.9% were married and 24.2% were single. About 36 % of the addicts reported that they had been using the substance for more than 10 years. Only 2.3% reported use of one-year or less. The Table below gives the frequency distribution for the longest duration of abstinence. 74.3% gave a history of abstinence. Only 1.6% reported 5 years or more as the longest period of abstinence. 18.3% indicated one to three months as the longest period of abstinence. Overall, 62.1 % relapsed before one year of abstinence had elapsed. Table Frequency Distribution of Addicts by Duration of Current Opiate Use and longest Duration of Abstinence
Transcribed Image Text:Problem #2. Little is known about heroin and cocaine use in Afghanistan. Opium was known to the ancient Persians and has traditionally been used for recreation, pain relief, and treatment of mental disorders. Data were gathered from 306 consecutive addicts who sought treatment an identified addicts center from July to September in a recent year. An interview was conducted with the subject and a close relative. The data collected revealed that the mean (average) age of the subject was 37.0 years; that 97.7% were male, of whom 73.9% were married and 24.2% were single. About 36 % of the addicts reported that they had been using the substance for more than 10 years. Only 2.3% reported use of one-year or less. The Table below gives the frequency distribution for the longest duration of abstinence. 74.3% gave a history of abstinence. Only 1.6% reported 5 years or more as the longest period of abstinence. 18.3% indicated one to three months as the longest period of abstinence. Overall, 62.1 % relapsed before one year of abstinence had elapsed. Table Frequency Distribution of Addicts by Duration of Current Opiate Use and longest Duration of Abstinence
Current Use by year f Duration of Use f % 1. 7 2.3 No abstinence 63 20.6 19 6.2 1 week 18 5.9 3 18 5.9 1 to 4 wks. 28 12.4 19 6.2 1 to 3 mos. 56 18.3 4. 5. 31 10.1 3 to 6 mos. 44 14.4 6. 27 8.8 6 to 12 mos. 34 11.1 27 8.8 1 to 3 yrs. 29 9.5 18 5.9 3 to 5 yrs. 6 2.0 6 2.0 5 yrs. 5 1.6 10 24 7.8 No answer 13 4.2 11-15 26 8.4 16-20 57 18.6 20 27 8.8 13. Does the last column of percentages in the table add up to 100%?Check the researchers' calculation of one of the percentages by dividing the number who reported no abstinence by the total number in the sample and multiplying that number by 100. To two decimal places, what answer do you get?
Transcribed Image Text:Current Use by year f Duration of Use f % 1. 7 2.3 No abstinence 63 20.6 19 6.2 1 week 18 5.9 3 18 5.9 1 to 4 wks. 28 12.4 19 6.2 1 to 3 mos. 56 18.3 4. 5. 31 10.1 3 to 6 mos. 44 14.4 6. 27 8.8 6 to 12 mos. 34 11.1 27 8.8 1 to 3 yrs. 29 9.5 18 5.9 3 to 5 yrs. 6 2.0 6 2.0 5 yrs. 5 1.6 10 24 7.8 No answer 13 4.2 11-15 26 8.4 16-20 57 18.6 20 27 8.8 13. Does the last column of percentages in the table add up to 100%?Check the researchers' calculation of one of the percentages by dividing the number who reported no abstinence by the total number in the sample and multiplying that number by 100. To two decimal places, what answer do you get?
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