The accompanying two-way frequency table appears in the article "Marijuana Use in College" (Youth and Society, 1979: 323-334). Each of 445 college students was classified according to both frequency of marijuana use and parental use of alcohol and psychoactive drugs. Does the data suggest that parental usage and student usage are independent in the population from which the sample was drawn?

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Standard Level of Marijuana Use Never Occasional Regular 40 Neither 14 54 Parental Use of Alcohol and Drugs One 68 51 19 Both 17