A market research company is comparing two populations. The two independent samples drawn from the different populations. The first has a sample size of 9, a sample mean of 12.7 and a sample standard deviation of 2.2. The second has a sample size of 13, a sample mean of 12.8 and a sample standard deviation of 2.7. Assume that the two populations' standard deviations are not known and equal. Calculate and enter number 1 if we can conclude sufficient evidence to reject H0: 1-2=0 based on two-tailed test of the hypothesis with a significance level of 0.20; otherwise enter number 2, if we cannot reject H0