Among the huge literature on smoking are data detailing the relative successfulness of males and females...

 

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Among the huge literature on smoking are data detailing the relative successfulness of males and females in quitting smoking. A study of 400 adults (ages 20 and older) who began various smoking-cessation programs produced the data in the table below. In the table, "less than two weeks" means that the individual returned to smoking within two weeks of beginning the program; "between two weeks and one year" means that the individual survived the first two weeks without smoking but returned to smoking within a year; and "at least one year" means that the individual has not smoked for at least a year since beginning the program. The table is a contingency table whose cells contain the respective observed frequencies of classifications of the 400 smokers. In addition, three of the cells have blanks beneath the observed frequencies. Fill in these blanks with the frequencies expected if the two variables, sex and length of the smoking cessation period, are independent. Round your responses to at least two decimal places. Length of smoking cessation period. Less than two weeks Between two weeks and one year At least one year Total 58 121 76 Male 255 0 Sex 42 79 24 145 Female Total 200 400 100 P 0 100 X S Among the huge literature on smoking are data detailing the relative successfulness of males and females in quitting smoking. A study of 400 adults (ages 20 and older) who began various smoking-cessation programs produced the data in the table below. In the table, "less than two weeks" means that the individual returned to smoking within two weeks of beginning the program; "between two weeks and one year" means that the individual survived the first two weeks without smoking but returned to smoking within a year; and "at least one year" means that the individual has not smoked for at least a year since beginning the program. The table is a contingency table whose cells contain the respective observed frequencies of classifications of the 400 smokers. In addition, three of the cells have blanks beneath the observed frequencies. Fill in these blanks with the frequencies expected if the two variables, sex and length of the smoking cessation period, are independent. Round your responses to at least two decimal places. Length of smoking cessation period. Less than two weeks Between two weeks and one year At least one year Total 58 121 76 Male 255 0 Sex 42 79 24 145 Female Total 200 400 100 P 0 100 X S

Answer rating: 100% (QA)

We know that E F Row total x Column total100 E 11 100255400 6375 Use 400 instead of 100 ... View the full answer