10 I would like to estimate difference in the time it takes Canadian and American 10 year-olds to multiply one-digit numbers. I know that ten-year old Americans can do the multiplication in 1200 milliseconds on average. The table below shows the reaction times of a random sample of Canadian ten year-olds. Nine Reaction times (milliseconds) 800 1200 1000 1300 700 1200 1300 600 900 m = 1000 ss = 560000 This estimate has high/low external validity. A High B Low 11 I would like to estimate the effect size (8) that characterizes the difference in time required for Canadian and American 10 year-olds to multiply one-digit numbers. I know that ten-year old Americans can do the multiplication in 1200 milliseconds on average. The table below shows the reaction times of a random sample of Canadian ten year-olds. Nine Reaction times (milliseconds) 800 1200 1000 1300 700 1200 1300 600 900 m = 1000 ss = 560000 Compute lower limit of the approximate 95% confidence interval around d. Please enter your answer correctly rounded to at least 2 decimal places. -1.51 Numbers only -1.51194407 - -1.50194407 1/1 1/1