# Question: Suppose that you have two different X variables X1 X2

Suppose that you have two different X variables (X1, X2) that you use to predict scores on Y. What formula would you need to use to assess whether their correlations with Y differ significantly? What information would you need to have to do this test?

Explain each of these null hypotheses.

Ho: = 0

Ho: = .9

Ho: 1 = 2

Ho: xy = zy

What test statistic should be used for each of these null hypotheses?

Explain each of these null hypotheses.

Ho: = 0

Ho: = .9

Ho: 1 = 2

Ho: xy = zy

What test statistic should be used for each of these null hypotheses?

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