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Topic: Week 3: T-Score vs. Z-Score Testing Research Assignment
1 Explain when a z-test would be appropriate over a t-test.
2 Researchers routinely choose an alpha level of 0.05 for testing their hypotheses. What are some experiments for which you might want a lower alpha level (e.g., 0.01)? What are some situations in which you might accept a higher level (e.g., 0.1)?
Week 3 Name Institution Week 3 T-Score vs. Z-Score Testing A z-score and a t-score are both measures employed in hypothesis testing. Ideally, t scores are used in circumstances where the sample size is below 30 and where the standard deviation is not definite. This means that for the z-score to be used, the researcher has to have a sample size that is above 30 and have clear information of the standard deviation of the population being investigated. Ideally, z-scores are a conversion of personal scores into an ordinary form. The conversion is therefore giv