please I need help solving this practice question

06.(10) To study the average weight difference between different races, we collected 40 female adults weights from Asian, and another 40 from European. The sample mean are 126 lb and 138 lb. Let's assume the population standard deviation of Asian female adult weight and European female adult weight are 14 lb, 20 lb, respectively. 1.(6) Use the P -va|ue method to test if the average weight of two races are different. Let at = 0.1. 2.(4) Calculate 90% two-sided confidence interval for the mean weight difference