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1. Why would a researcher need to use a two-tailed test vs. a one-tailed test? 2.A...

1. Why would a researcher need to use a two-tailed test vs. a one-tailed test?

2.A scholar tests the following hypothesis:  Females have a greater number of delinquent peers than males.  In her test, she calculates a t value is -2.349.  Why would it be unnecessary to compare this test statistic to a critical t value?

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