The mean age when smokers first start is 13 years old with a population standard deviation of 1.8 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 34 smokers found that their mean starting age was 12 years old. Do the data support the claim at the 10% significance level? What are the correct hypotheses? Но: и 12 * years Hi: и 12 * years Based on the hypotheses, find the following: Test Statistic z= 3.2394 * (Round to 4 decimal places.) Critical Values = + 1.28 * (Round to 2 decimal places.) Based on the above we choose to Reject the null hypothesis The correct summary would be: There is enough evidence to support the claim start is different than 13. v that the mean age smokers first Get help: Written Example

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The mean age when smokers first start is 13 years old with a population standard deviation of 1.8 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 34 smokers found that
their mean starting age was 12 years old. Do the data support the claim at the 10% significance level?
What are the correct hypotheses?
Но: и
12
* years
Hi: и
12
* years
Based on the hypotheses, find the following:
Test Statistic z= 3.2394
* (Round to 4 decimal places.)
Critical Values = + 1.28
* (Round to 2 decimal places.)
Based on the above we choose to Reject the null hypothesis
The correct summary would be: There is enough evidence to support the claim
start is different than 13.
v that the mean age smokers first
Get help: Written Example
Transcribed Image Text:The mean age when smokers first start is 13 years old with a population standard deviation of 1.8 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 34 smokers found that their mean starting age was 12 years old. Do the data support the claim at the 10% significance level? What are the correct hypotheses? Но: и 12 * years Hi: и 12 * years Based on the hypotheses, find the following: Test Statistic z= 3.2394 * (Round to 4 decimal places.) Critical Values = + 1.28 * (Round to 2 decimal places.) Based on the above we choose to Reject the null hypothesis The correct summary would be: There is enough evidence to support the claim start is different than 13. v that the mean age smokers first Get help: Written Example
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