Please answer this and then an explanation of whether I should reject and null hypothesis and why

Question 2 (4 points) CI Lower = (Sx - x, ) (-teri ( ) + ( X, - X,) Consider the research design described above. The results from the recylcing study are as follows: Treatment group mean: 4.80 Control group mean: 3.90 Sample size: 50 Standard error of the differences between the means: 0.70 Computer the lower bound of the confidence interval. (See the formula.) You may use this website to obtain the critical value for the t-test. Make sure to use .05 for the two-tailed probability and use the "two-tailed T value" in your calculation. Or you can use a standard table of critical t-values. And make sure to use the treatment group mean as "Mean 1" in the formula. Your