Question

For each of the scenarios, answer the following:

1. What are the variables of interest in this study? If the study is an experimental one, identify which variable is the IV and which variable is the DV.

2. What do you think the researcher's hypothesis was?

3. Based on your answer to 2, what should the null and alternative hypotheses be?

4. Based on your answer to 2, which statistical test would you use to address this hypothesis? Explain your reasoning.

A local brewing company has just created a new ale, Best Ale, that is supposed to be imbued with truly magical medicinal properties (as well as being delicious). To investigate its effects, a researcher asks four groups of joggers to run the distance from A to B. One group drinks nothing beforehand; another group drink one pint of "Best Ale" each; third group drinks two pints each; and a fourth group drink four pints each. The researchers then measured how fast it took each jogger to get from A to B.

Answer 1

1. The variables of interest are beer consumption and jogging speed.

IV: Beer consumption

DV: Jogging speed

2. The researcher may have hypothesised “Beer consumption leads to a significant increase in jogging speed.”

3. N0: Beer consumption has no significant impact on jogging speed.

N1: Beer consumption leads to a significant increase in jogging speed.

4. The best statistical test for this research would be a one way ANOVA, as we are trying to understanding if there are significant differences in the jogging speed between four participant groups.