The results of sampling independent populations: sample 1 from p_opulation 1 - mean 1000 - sample standard deviation 400 - sample size 50 sample 2 from p_opulation 2 - mean 1250 - sample standard deviation 500 - sample size 75 Test the H0: population1 mean = population2 mean at o: = 0.01. HA: population1 mean = population2 mean. This is a two-tailed test with both a negative lower critical value and a positive upper critical value. Separate variances is assumed. 0 Test statistic of 65.28 a Critical value of -2.36. H0 is not rejected. Conclude difference of means = 0. 0 Test statistic of -3.09 s Critical value of -2.62. H0 rejected. Conclude difference of means :5 0. 0 Test statistic of -65.23 a Critical value of -1.29. H0 rejected. Conclude difference of means = 0 0 Test statistic of -3.09 s Critical value of -1.29. H0 rejected. Conclude difference of means as 0