Exam 4: The Scientific Method: The Gold Standard for Establishing Causality

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In evaluating the hypothesis test on experimental data, all the following will change the resulting test statistic except for what?

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Which of the following is an example of nonrandom treatment assignment in nonexperimental data?

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Which of the following is not one of the six steps of the scientific method?

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The most robust (but perhaps impractical) way to estimate the price elasticity of demand for your product would be:

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Which of the following departments is likely to experience experimental data more frequently than nonexperimental data?

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Nonexperimental data are likely to have issues with all of the follow assumptions except for what?

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When implementing the scientific method, one moves from a research question to a proposed idea based on limited evidence that justifies further investigation, also known as a:

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In testing if promotions (binary) Pi have an effect on sales, Si with a null hypothesis that the average treatment effect is zero, the null hypothesis could be written as:

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Often times a hypothesis test will involve determining the average treatment effect (ATE) or the:

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Suppose you wanted to determine if you should reject the null hypothesis that running a playing fast tempo (as opposed to slow) music in your store has no effect on sales. On 65 randomly selected days with fast tempo music on the average store sales is $2,345 with a sample standard deviation of 45, while on 75 randomly selected days with slow tempo music on the average store sales is $2,555, with a sample standard deviation of 65. What would be the proper t-stat for this hypothesis test?

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