Question

The mean age when smokers first start is 13 years old with a population standard deviation...

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 12.1 years old. Do the data support the claim at the 1% significance level?

ho=

ha=

test statistic z=

critical values=

Based on the above we choose to (Select one answer)

Accept the alternative hypotheis

Accept the null hypothesis

Fail to reject the null hypothesis

Reject the null hypothesis

The correct summary would be: (Select one answer) that the mean age smokers first start is different than 13.

There is not enough evidence to reject the claim

There is enough evidence to reject the claim

There is enough evidence to support the claim

There is not enough evidence to support the claim

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The mean age when smokers first start is 13 years old with a population standard deviation...
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 12.2 years old. Do the data support the claim at the 10% significance level? What...
The mean age when smokers first start is 13 years old with a population standard deviation...
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 35 smokers found that their mean starting age was 12.1 years old. Do the data support the claim at the 10% significance level? What...
From generation to generation, the mean age when smokers first start to smoke varies. However, the...
From generation to generation, the mean age when smokers first start to smoke varies. However, the standard deviation of that age remains constant of around 2.1 years. A survey of 40 smokers of this generation was done to see if the mean starting age is at least 19. The sample mean was 18.1 with a sample standard deviation of 1.3. Do the data support the claim at the 95% confidence level?
From generation to generation, the mean age when smokers first start to smoke varies. However, the...
From generation to generation, the mean age when smokers first start to smoke varies. However, the standard deviation of that age remains constant at around 2.1 years. A survey of 44 smokers of this generation was done to see if the mean starting age is at least 19. The sample mean was 18.2 with a sample standard deviation of 1.3. Do the data support the claim at the 5% level? left is not 17.82 18.2    right is not 18.58...
From generation to generation, the mean age when smokers first start to smoke varies. However, the...
From generation to generation, the mean age when smokers first start to smoke varies. However, the standard deviation of that age remains constant at around 2.1 years. A survey of 39 smokers of this generation was done to see if the mean starting age is at least 19. The sample mean was 18.1 with a sample standard deviation of 1.3. Do the data support the claim at the 5% level? 1. State the distribution to use for the test. (Round...
From generation to generation, the mean age when smokers first start to smoke varies. However, the...
From generation to generation, the mean age when smokers first start to smoke varies. However, the standard deviation of that age remains constant at around 2.1 years. A survey of 44 smokers of this generation was done to see if the mean starting age is at least 19. The sample mean was 18.2 with a sample standard deviation of 1.3. Do the data support the claim at the 5% level? Construct a 95% confidence interval for the true mean. Sketch...
From generation to generation, the mean age when smokers first start to smoke varies. However, the...
From generation to generation, the mean age when smokers first start to smoke varies. However, the standard deviation of that age remains constant at around 2.1 years. A survey of 37 smokers of this generation was done to see if the mean starting age is at least 19. The sample mean was 18.2 with a sample standard deviation of 1.3. Do the data support the claim at the 5% level? Note: If you are using a Student's t-distribution for the...
In an interesting study by a tobacco company, they found that the mean age when smokers...
In an interesting study by a tobacco company, they found that the mean age when smokers first start to smoke varies in each generation. However, the standard deviation of that age remains constant of around 1.9 years. A survey of 45 smokers of the current generation was done to test if the mean age for starting to smoke is at least 20. The sample mean was 19.5 with a sample standard deviation of 1.5. Do the data support the claim...
From generation to generation, the mean age when smokers first start to smoke varies. However, the...
From generation to generation, the mean age when smokers first start to smoke varies. However, the standard deviation of that age remains constant at around 2.1 years. A survey of 35smokers of this generation was done to see if the mean starting age is at least 19. The sample mean was 18.2 with a sample standard deviation of 1.3. Do the data support the claim at the 5% level? Note: If you are using a Student's t-distribution for the problem,...
From generation to generation, the mean age when smokers first start to smoke varies. However, the...
From generation to generation, the mean age when smokers first start to smoke varies. However, the standard deviation of that age remains constant at around 2.1 years. A survey of 39 smokers of this generation was done to see if the mean starting age is at least 19. The sample mean was 18.2 with a sample standard deviation of 1.3. Do the data support the claim at the 5% level? Note: If you are using a Student's t-distribution for the...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT