The mean age when smokers first start is 13 years old with a population standard deviation of 1.9 years. A researcher thinks that smoking age has significantly changed since the invention of ENDS-electronic nicotine delivery systems. A survey of smokers of this generation was done to see if the mean age has changed. The sample of 33 smokers found that their mean starting age was 12.1 years old. Do the data support the claim at the 10% significance level? What are the correct hypotheses? Ho: Select an answer v ? v years H1: Select an answer v ? v years Based on the hypotheses, find the following: Test Statistic z = (Give answer to at least 4 decimal places) Critical Values = ± (Give answer to at least 4 decimal places) Based on the above we choose to Select an answer v that the The correct summary would be: Select an answer claim that the mean age smokers first start is different than 13.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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known standard deviation

The mean age when smokers first start is 13 years old with a population standard
deviation of 1.9 years. A researcher thinks that smoking age has significantly changed
since the invention of ENDS-electronic nicotine delivery systems. A survey of smokers of
this generation was done to see if the mean age has changed. The sample of 33 smokers
found that their mean starting age was 12.1 years old. Do the data support the claim at
the 10% significance level?
What are the correct hypotheses?
Ho: Select an answer
? v
уears
H1: Select an answer
years
Based on the hypotheses, find the following:
Test Statistic z =
(Give answer to at least 4 decimal places)
Critical Values
土
(Give answer to at least 4 decimal places)
%3D
Based on the above we choose to Select an answer
The correct summary would be: Select an answer
claim that the mean age smokers first start is different than 13.
that the
Transcribed Image Text:The mean age when smokers first start is 13 years old with a population standard deviation of 1.9 years. A researcher thinks that smoking age has significantly changed since the invention of ENDS-electronic nicotine delivery systems. A survey of smokers of this generation was done to see if the mean age has changed. The sample of 33 smokers found that their mean starting age was 12.1 years old. Do the data support the claim at the 10% significance level? What are the correct hypotheses? Ho: Select an answer ? v уears H1: Select an answer years Based on the hypotheses, find the following: Test Statistic z = (Give answer to at least 4 decimal places) Critical Values 土 (Give answer to at least 4 decimal places) %3D Based on the above we choose to Select an answer The correct summary would be: Select an answer claim that the mean age smokers first start is different than 13. that the
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