The plot below shows 95% confidence intervals for the mean outcomes of two different treatments, and a dashed line indicating the null hypothesis for the mean. The difference in means between the two samples was -0.30. Based on this plot alone, what can we say about the statistical significance of the difference between the means of the two treatments A and B? Question 2Select one: a. The observed difference is statistically significant at the 5% level. b. The observed difference is not statistically significant at the 5% level. c. Treatment B is significantly different from A at the 5% level, but A is not significantly different from B. d. It is not possible to tell if the difference is statistically significant or not based on this figure alone.

0.8 Response oO Co f. 0.2 treatment The difference in means between the two samples was -0.30. Based on this plot alone, what can we say about the statistical significance of the difference between the means of the two treatments A and B