Consider the following data for two independent random samples taken from two normal populations. sample 1 10 7 13 7 9 8 sample 2 8 7 8 4 6 9 compute the two sample means. sample 1: sample 2: compute the two sample standard deviations (to 2 decimals). sample 1: sample 2: what is the point estimate of the difference between the two population means? what is the 90% confidence interval estimate of the difference between the two population means? if required enter negative values as negative numbers (to 2 decimals). use z-table. ( , )