After Conducting an Independent Samples T-Test, a Researcher Finds That

Multiple Choice

After conducting an independent samples t-test, a researcher finds that the 95% confidence interval estimating the difference between the treatment group and the control group is 2.37 ± 1.85. Which of the following is definitely true?

A) The difference between groups is not significant.
B) The difference between groups is significant.
C) The effect size of the comparison between groups is 3.7.
D) The mean of the treatment group is 2.37.