An Experiment Is Conducted with Two Groups of 25 College

Multiple Choice

An experiment is conducted with two groups of 25 college students. The treatment group scored an average of 3.67 with a standard deviation of 0.86. The placebo group scored an average of 3.29 with a standard deviation of 0.97. Calculate a 95% pooled confidence interval for the difference in means between the treatment and the placebo.

A) (-0.44, 0.82)
B) (-0.14, 0.90)
C) (-0.25, 1.01)
D) None of the above