A cigarette company interested in the effect of gender on the type of cigarettes smoked and has collected the following
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A cigarette company interested in the effect of gender on the type of cigarettes smoked and has collected the following
A cigarette company interested in the effect of gender on the type of cigarettes smoked and has collected the following data from a random sample of 150 persons: Cigarette Male Female Total A 30 25 55 B 15 40 55 С 10 30 40 Total 55 95 150 Test whether the types of cigarette and sex are independent. !
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