Based on Data from Two Very Large Independent Samples, Two

question 15

Multiple Choice

Based on data from two very large independent samples, two students tested a hypothesis about equality of population means using a = 0.02. One student used a one-tail test and rejected the null hypothesis, but the other used a two-tail test and failed to reject the null hypothesis. Which of these might have been their calculated value of t?

• A) 2.66
• B) 1.88
• C) 2.22
• D) 1.22
• E) 1.55

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