One-sided versus two-sided p-valuescomputer software, Ask an Expert

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One-sided versus two-sided P-values.

Computer software reports x^‾ = 15.3 and P = 0.074 for a t test of H0: μ = 0 versus Ha: μ ≠ 0. Based on prior knowledge, you can justify testing the alternative Ha: μ > 0. What is the P-value for your significance test?

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