In a study examining if the use of epidural analgenin prolongs the duration of labor, rescarchers randomly assigned 560 first-time mothers into intervention group and control group. Women in the intervention group received epidural analgesia while women in the control group received no anesthesin. The lengths of labor (in minutes) were recorded .

Question 1 (10 points) What hypothesis test would the researchers use ?

Independent Samples T-test

Paired Samples T-test

One-way ANOVA

Chi - Square Test of Independence

Correlation