A market research firm wants to determine if there is a difference in the amount

Question

A market research firm wants to determine if there is a difference in the amount of television viewed by people who introverted and people who are extroverted. Using the questionnaire and guidelines at http://www.jamescmccroskey.com/measures/introversion.htm, 50 introverts and 50 extroverts were identified. Each individual then answered the question “How many hours of television have you watched in the past 48 hours?” To increase participation rates, each person who completes the survey will be given $50. Data were collected between January 17 and January 19, 2016.

A. Is this an observational study and not an experiment? Explain.

B. Explain the concept of confounding in the context of this study. Include an example of a possible confounding variable.

C. If the mean number of hours spent watching television was statistically significantly smaller for introverts (than for extroverts), should one conclude that the lower number of hours watching television can be attributed to level of introversion? Explain.

Explanation / Answer

A. Is this an observational study and not an experiment? Explain.

this is observational. because we are just asking a question , we are not doing an experiment

B. Explain the concept of confounding in the context of this study. Include an example of a possible confounding variable.

difference in the amount of television viewed by people who introverted and people who are extroverted.

c)

should one conclude that the lower number of hours watching television can be attributed to level of introversion?

Yes, because if the mean is lower than introverts than for extroverts

that means that if we do an inference we will have a conclusion

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