How do you solve this??

Chapter 6, Section 4-D, Exercise 180 Use the formula to nd the standard error of the distribution of differences in sample means, )'cl 32. Samples of size 115 from Population 1 with mean 81 and standard deviation 14 and samples of size 80 from Population 2 with mean 74 and standard deviation 18 Round your answer for the standard error to two decimal places. standard error = the absolute tolerance is +/-0.01