Assuming you are testing a null hypothesis (two-tailed) about the population mean and determining whether to reject the null hypothesis based on the t-stat at the 95% confidence level, which t-stat would warrant rejecting the null hypothesis?
A) 1.4
B) -1.4
C) 3
D) 1.6

Question

Quizplus · Accepted Answer

At the 95% confidence level, the critical t-value for a two-tailed test typically exceeds 2 (though it varies slightly depending on degrees of freedom). Since option C (3) is the only value exceeding this threshold, it indicates a significant result that would lead to rejecting the null hypothesis. Options A (1.4), B (-1.4), and D (1.6) do not exceed the typical critical value for significance.

Assuming You Are Testing a Null Hypothesis (Two-Tailed) About the Population