What is the essential component of a well designed experiment
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What is the essential component of a well designed experiment
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- A researcher studies political science students' general knowledge about politics both during their first year (M = 25 out of 100 problems on a standard test correct) and during their fourth year (M = 67 out of 100). Using a repeated-measures t-test, they find a statistically significant result. What is their substantive conclusion?You recently completed an experiment concerning the effects of carbs on happiness. One group of 11 people are assigned a high carb diet, another group of 11 people are assigned a moderate-high carb diet, another group of 11 people are assigned a moderate-low carb diet, and a final group of 11 people are assigned a low carb diet. If I find that I fail to reject the null hypothesis, what might my next step be? Group of answer choices Change my analysis and alpha to make the finding significant and then run post-hoc tests. 1. Run multiple dependent measures t-tests to see if there are any significant differences between particular groups 2. Run multiple independent samples t-tests to see if there are any significant differences between particular groups 3. Change my hypothesis to see if I can find something significant with a different hypothesis for this study 4. Run home and binge-watch Bridgerton because there is nothing else that should be done statisticallyOutline the components of the classical experimental design. How is it different from a one-group pre-test post-test design?
- I need help on how to answer this step by step using the data for repeated measures designs and the 4 step hypothesis.WHAT IS THE BEST HYPOTHESIS TO USE IN THIS SITUATION?When a researcher conducts an experiment and fails to find significant results, what should she conclude? The research hypothesis is false The current data are inconclusive with regards to the research hypothesis The null hypothesis is true The null hypothesis is false