A researcher is conducting a one-sample t test to determine if a particular treatment intervention will lower scores on a dependent variable. α = .01 and n = 43. What is t_crit? A) -2.423 B) ±2.423 C) +2.423 D) -2.704

Question

Quizplus · Accepted Answer

The critical t-value for a one-tailed t-test with α = .01 and df = 42 is -2.423. This is because there are 42 degrees of freedom (n-1 = 43-1 = 42) and we are conducting a one-tailed test (looking for decrease in scores). Therefore, the correct answer is A) -2.423.

A Researcher Is Conducting a One-Sample T Test to Determine