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A recent poll of 1900 randomly selected 18-25-year-olds revealed that 220 currently use marijuana or hashish. According to a publication, 12.6 % 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 12.6%? Use α = 0.01 significance level. test statistic = positive critical score negative critical z score

A recent poll of 1900 randomly selected 18-25-year-olds revealed that 220 currently use marijuana or hashish. According to a publication, 12.6 % 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 12.6%? Use α = 0.01 significance level. test statistic = positive critical score negative critical z score

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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A recent poll of 1900 randomly selected 18-25-year-olds revealed that 220 currently use marijuana or hashish. According to a publication, 12.6 % 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 12.6% ? Use α = 0.01 significance level. test statistic z = positive critical score negative critical z score
Transcribed Image Text:A recent poll of 1900 randomly selected 18-25-year-olds revealed that 220 currently use marijuana or hashish. According to a publication, 12.6 % 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 12.6% ? Use α = 0.01 significance level. test statistic z = positive critical score negative critical z score
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