Hi! This is 2 questions I have been stuck on for about an hour now. I am so confused and really need some help. Thank you so much!

Question 9 [1 point} A researcher hypothesizes that attitudes toward recycling can be improved by pro- recycling messages. She randomizes participants to either the treatment or control condition. The treatment group reads a short argument in favor of recycling then completes a questionnaire about attitudes toward recycling {on a scale of 1-73, with higher values indicating more positive attitudes}. The the control group doesn't read anything but responds to the same questionnaire. In this design, attitude toward recycling is O A} the dependent variable. 0 Bl the independent variable. O C} the causal variable. 0 D} the predictor variable. Question 10 (4 points) CI Lower = (5x -8, ) (-1 am ) + (X,- X, ) Consider the research design described above. The results from the recylcing study are as follows: Treatment group mean: 5.30 Control group mean: 2.70 Sample size: 50 Standard error of the differences between the means: 0.80 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 Answer: Answer Hide hint for Question 10 Think about why I asked for only the lower bound of the Cl. It's based on the hypothesis, which predicts an improvement in attitudes toward recycling as a function of the message treatement. We don't expect a worsening of attitudes, right