Statistics
posted by Christine .
Does the null hypothesis for a nondirectional alternative hypothesis differ from the null hypothesis for a directional alternative hypothesis? Explain.
I have no idea how to state the answer for this.

Statistics 
PsyDAG
Depending on the level of significance used, usually P=.01 or P=.05 (to reject the Ho, null hypothesis) the values needed for a onetailed test (directional) are lower than those for a twotailed (nondirectional) test.
This should start you out. I hope it helps. Thanks for asking.
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