Examine each of the following questions for possible bias. If you think the question is biased, indicate how and propose a better question. a) How would you rate the career of the legendary Wayne Gretz Research Paper

Examine each of the following questions for possible bias. If you think the question is biased, indicate how and propose a better question. a) How would you rate the career of the legendary Wayne Gretzky? b) Wayne Gretzky never won an Olympic medal, how would rate his career? c) Do you think that the controversial mayor of Toronto Rob Ford is doing a good job? d) Do you think elementary school students should be allowed to have cell phones in the classroom? e) Do you think that the amount of media coverage of Justin Bieber is appropriate? The Stats Research Group interviewed 2400 randomly selected Canadian adults aged 18 and older in the summer of 2015. Stats Research Group reported that when asked how they keep up to date on current events, 31% said Twitter, 33% said the Facebook and 22% television. Identify the following items for this study: a) the population b) the population parameter of interest c) the sampling frame d) the sample e) the sampling method including whether randomization was employed f) Any potential sources of bias you can detect or any problems you see in generalizing to the population of interest. A researcher would like to investigate whether people suffering from insomnia can be helped by taking regular yoga classes or by reducing their intake of caffeine. An experiment was designed to compare yoga (either taking it or not) in combination with the amount of caffeine per day (two cups, 1 cup or none). A group of 40 adults who were suffering from insomnia were randomly assigned to a group for each yoga/caffeine combination. At the end of two months, the participants were evaluated for their degree of insomnia. Identify the factors and the levels for each factor in this experiment. How many treatments do we have here? Identify the response variable. Comment on the design of the experiment in context referring to the four principles (control, randomize, replicate and block) of experimental design described in the book . A typical hour of prime-time television shows three to five violent acts. Linking family interviews and police records a clear association between spent time watching TV as a child and later aggressive behaviour. The researchers said that the association was statistically significant. What does statistically significant mean in this context? Explain. Is this an experiment or an observational study? Explain. News reports claimed this study proved that preventing children from watching television will result in less later aggressive behaviour. Explain why this conclusion is not justified by the study. Include an example of a possible confounding variable. Explain.; Examine each of the following questions for possible bias. If you think the question is biased, indicate how and propose a better question. a) How would you rate the career of the legendary Wayne Gretzky? b) Wayne Gretzky never won an Olympic medal, how would rate his career? c) Do you think that the controversial mayor of Toronto Rob Ford is doing a good job? d) Do you think elementary school students should be allowed to have cell phones in the classroom? e) Do you think that the amount of media coverage of Justin Bieber is appropriate? The Stats Research Group interviewed 2400 randomly selected Canadian adults aged 18 and older in the summer of 2015. Stats Research Group reported that when asked how they keep up to date on current events, 31% said Twitter, 33% said the Facebook and 22% television. Identify the following items for this study: a) the population b) the population parameter of interest c) the sampling frame d) the sample e) the sampling method including whether randomization was employed f) Any potential sources of bias you can detect or any problems you see in generalizing to the population of interest. A researcher would like to investigate whether people suffering from insomnia can be helped by taking regular yoga classes or by reducing their intake of caffeine. An experiment was designed to compare yoga (either taking it or not) in combination with the amount of caffeine per day (two cups, 1 cup or none). A group of 40 adults who were suffering from insomnia were randomly assigned to a group for each yoga/caffeine combination. At the end of two months, the participants were evaluated for their degree of insomnia. Identify the factors and the levels for each factor in this experiment. How many treatments do we have here? Identify the response variable. Comment on the design of the experiment in context referring to the four principles (control, randomize, replicate and block) of experimental design described in the book . A typical hour of prime-time television shows three to five violent acts. Linking family interviews and police records a clear association between spent time watching TV as a child and later aggressive behaviour. The researchers said that the association was statistically significant. What does statistically significant mean in this context? Explain. Is this an experiment or an observational study? Explain. News reports claimed this study proved that preventing children from watching television will result in less later aggressive behaviour. Explain why this conclusion is not justified by the study. Include an example of a possible confounding variable. Explain.

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