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

Question

Quizplus · Accepted Answer

The Answer of 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

An Experiment Is Conducted with Two Groups of 25 College