Answer to Question #115424 in Statistics and Probability for Sal

Question

1d. The researchers decide to do a two tailed Matched Pairs T-test to decide if there is a significant difference in tire wear. The experiment yields a t-score of 2.1
If they are using an alpha rejection level of 5%, what decision should they make about tire wear? Justify your answer.

1e. If they decide that one tire type wears significantly more than the other, what type of error could they be making and what are the ramifications of that decision.

2d. When checking for independence we often use the 10% rule. Explain why this is necessary.

2e. In this study, the researchers used a random selection of dogs. Is this necessary? Explain in detail when it is necessary to use random subjects and when it is not.

6d. Explain a method of doing this as a matched pairs experiment.

6e. A reviewer is concerned that your matched pairs experiment may have bias in it. Explain what you did or could do to reduce their fear.

Answer 1

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