Assignment 09.01 Inferences -Guided Notes

2. A company that produces television shows is interested in what type of show people would like to watch for a prime time slot (crime drama, animated comedy, or reality contest). Explain why it is better to select people for the survey using a random process rather than selecting people for the survey who say they watch television with their children.

3. A company that produces television shows is interested in what type of show people would like to watch for a prime time slot (crime drama, animated comedy, or reality contest).The company asks, "Which show would you be most likely to watch during prime time?

• Mr. Winslow
• Kibble
• Extreme Mountain Hunter: a show in which 20 contestants attempt to climb some of the tallest mountains in the world using only equipment they create from nature

Will this question likely produce data that would allow the company to answer the question they are interested in? Explain your reasoning.

4. Give an example of how Statistics and Inferences can be used in the real world?

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Assignment 09.02 Study Types -Guided Notes

Use the following information to answer questions 2, 3, and 4:

A study of 1,000 people aged 20-30 asked how much television each person watches each night and how each person would rate their energy level in the evenings. The study showed that people who watch television for at least 2 hours every night have lower energy in the evening than people who do not watch as much television.

2. Is this study a survey, observational study, or experimental study? Explain your reasoning

3. Does this mean that watching television for at least 2 hours every night lowers energy in the evening? Explain your reasoning.

4. If you were to do your own experiment to determine if watching television for at least 2 hours every night lowers energy in the evening, how would you set up the experiment?

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Assignment 09.03 Randomness in Groups -Guided Notes

Use the following information to answer questions 2 and 3.

Suppose Kiran has a group of 50 people that he is going to study in an experimental study and he needs them to sign a form to participate. He creates two groups of 25 people. The first group consists of the first 25 people who turned in the signed form. The second group consists of the other 25 people who signed the form.

2. Are there any potential problems with Kiran's study? Explain your reasoning.

3. Why is it important to randomly assign people to groups in an experimental study?

4. Why is it important to separate experimental groups by a random process?

5. Why is it important to select samples from a population using random selection?