eviclara rs has declined in 1%, and the use of 7% to 20.4%. A ity indicated that 54 urvey. At the a = average?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 2AGP
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evicard
The use of both alcohol and tobacco by high school senibrs has declined in
the last 30 years. Alcohol use is down from 68.2% to 43.1%, and the use of
cigarettes by high school seniors has decreased from 36.7% to 20.4%. A
random sample of 300 high school seniors from a large city indicated that 54
had smoked a cigarette during the 30 days prior to the survey. At the a =
0.05 level of significance is this lower than the national average?
Transcribed Image Text:evicard The use of both alcohol and tobacco by high school senibrs has declined in the last 30 years. Alcohol use is down from 68.2% to 43.1%, and the use of cigarettes by high school seniors has decreased from 36.7% to 20.4%. A random sample of 300 high school seniors from a large city indicated that 54 had smoked a cigarette during the 30 days prior to the survey. At the a = 0.05 level of significance is this lower than the national average?
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