The following table presents data on 100 pregnant women and their smoking status before and after pregnancy. Determine whether there is a relationship between pregnancy and smoking status. (Hint: Are the samples independent?) Before PregnancyAfter PregnancyTotalSmokerNonsmokerNonsmoker55560Smoker202040Total2575100Calculate equations by hand.
The following table presents data on 100 pregnant women and their smoking status before and after pregnancy. Determine whether there is a relationship between pregnancy and smoking status. (Hint: Are the samples independent?) Before PregnancyAfter PregnancyTotalSmokerNonsmokerNonsmoker55560Smoker202040Total2575100Calculate equations by hand.
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The following table presents data on 100 pregnant women and their smoking status before and after pregnancy. Determine whether there is a relationship between pregnancy and smoking status. (Hint: Are the samples independent?) Before PregnancyAfter Pregnancy
Total
Smoker
Nonsmoker
Nonsmoker
5
55
60
Smoker
20
20
40
Total
25
75
100
Calculate equations by hand.
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