Calculate a 95% confidence interval for the true mean difference in reading and writing scores of high school seniors. Important Summary Information: Sample size: n = 200 Sample mean difference: d = -0.545 and standard deviation: sd = 8.887 1. What is the t-score you will use in your calculation (found on the t-distribution table)? 2. What is your standard error? 3. What is the interval that you calculated? Clearly label your answers