Even though we can often use many different techniques to an…
Even though we can often use many different techniques to analyze our data, which method makes the most sense if we are trying to use 2 discrete variables and participants experience one level to see if there are differences in a continuous variable?
Read DetailsA research study comparing mathematics performance for males…
A research study comparing mathematics performance for males and females predicts that females will have higher scores. If a one-tailed test is used to evaluate the results, then what is the correct statement for the alternative hypothesis (H1)?
Read DetailsA teacher wants to know whether the children in her class ar…
A teacher wants to know whether the children in her class are performing significantly better on a standardized math test compared to the national average. The national mean score is μ = 85, the national standard deviation is σ = 5, and the mean score in her class is M = 92.5. Use α = .05. What is the z-statistic in this test?
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