Calculate the 95% confidence interval for the difference (mu1-mu2) of two population means given the following sampling results. Population 1: sample size = 6, sample mean = 17.62, sample standard deviation = 3.25. Population 2: sample size = 17, sample mean = 15.57, sample standard deviation = 2.47. Your answer: 1.75 < mu1-mu2 < 2.36 -1.21 < mu1-mu2 < 5.31 -2.40 mu1-mu2 < 6.50 -2.07 mu1-mu2 < 6.18 1.50 mu1-mu2 < 2.61 -4.01 < mu1-mu2 < 8.11 -1.39 mu1-mu2 < 5.49 -3.61 < mu1-mu2 < 7.72 -0.42 < mu1-mu2 < 4.52 -1.44 < mu1-mu2 < 5.55