The difference of the sample means of two populations is 34.6, and the standard deviation of the difference of the sample means is 11.9.
The 95% confidence interval lies between _ and _ .

Consider the functions below. function 1 function 2 function 3 select the statement which is true about the functions over the interval [1, 2] a b function 3 has the highest average rate of change function 2 and function 3 have the same average rate of change. function and function 3 have the same average rate of change function 2 has the lowest average rate of change d.