Please Answer These Questions and Please be organize

Problem 4: [20 points = [10 + 10] Read Section 10.2 from the textbook and pay attention to Problem 10.23. Bonnie and Clyde decided to assume that population variances were entirely unknown and moved on to Scenario B. Two independent groups of car policies, each having n1 = n2 = n = 16 observations were analyzed. Individual records are assumed to be independent normally distributed, with population variances for groups I and II being unknown. Targeted parameter was (/1 - (2), or difference between two population means. Sample summaries were found as follows: . Means (X)1 = 105 and (X)2 = 111 . Sample Variances ($1)2 = 10 and ($2)2 = 90 1. At significance level a = 0.01, do you have enough evidence that /1