You are given the following data set for two populations:

Population 1:10221166442230343911

Population 2:1623543712242516321438601721

Assume that these samples are drawn from normal populations. You are also given the following information:

Sample mean Population 1 = 28.9

Sample standard deviation Population 1 = 17.72287

Sample mean Population 2 = 27.78571

Sample standard deviation Population 2 = 14.82295

What is a 95%lower-boundconfidence interval for (1- 2)?

(-13.2, )

(-11.7, )

(-10.8, )

(-9.5, )

(2.2, )