A recent poll of 1900 randomly selected 18-25-year-olds revealed that 220currently use marijuana or hashish. According to a publication, 12.5% of 18-25-year-olds were current users of marijuana or hashish in 1997. Do the data provide sufficient evidence to conclude that the percentage of 18-25-year-olds who currently use marijuana or hashish has changed from the 1997 percentage of 12.5%? Use α=0.05 significance level. test statistic z= positive critical z score = negative critical z score =

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