The Harris Poll has from time to time asked American adults whether or not they have tattoos. In 2008 they found that 14% of respondents said that they have a tattoo. The methodology section of the 2008 report says that the poll was conducted online with 2302 American adults and that respondents were chosen from people who agreed to participate in Harris surveys.a.Identify and classify the response variable in this study.b.Explain why the number 14% is a statistic.c.Is this Harris Poll likely to produce a representative sample on this issue? Explain. If not, identify a population you would be willing to generalize these results to.d.Describe in words the corresponding parameter of interest.

Question
Asked Jan 23, 2019

The Harris Poll has from time to time asked American adults whether or not they have tattoos. In 2008 they found that 14% of respondents said that they have a tattoo. The methodology section of the 2008 report says that the poll was conducted online with 2302 American adults and that respondents were chosen from people who agreed to participate in Harris surveys.
a.
Identify and classify the response variable in this study.
b.
Explain why the number 14% is a statistic.
c.
Is this Harris Poll likely to produce a representative sample on this issue? Explain. If not, identify a population you would be willing to generalize these results to.
d.
Describe in words the corresponding parameter of interest.

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Step 1

Solution: 

a. Identify and classify the response variable in this study.

Answer: The response variable in the study is "Whether or not an adult have a tattoo" and it is a categorical variable with two categories "Yes" or "No".

 

 

Step 2

b. Explain why the number 14% is a statistic.

Answer: The number 14% is a statistic because it is based on a sample of size 2302.

Step 3

c.Is this Harris Poll likely to produce a representative sample on this issue? Explain. If not, identify a population you would be willing to generalize these results to.

Answer: Yes, the Harris Pol...

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