can you help me answer this

Two random samples were selected independently from populations having normal distributions. The statistics given below were extracted from the samples. Complete parts a through c. X1 = 36.8 X2 = 25.7 a. If of =3 and 62 = 2 and the sample sizes are n, =60 and n2 =60, construct a 90% confidence interval for the difference between the two population means. The confidence interval is |s (H1 - 12) s. (Round to two decimal places as needed.) b. If 61 =62, S, =3, and $2 = 2, and the sample sizes are n, = 10 and n2 = 10, construct a 90% confidence interval for the difference between the two population means. The confidence interval is|s (H1 - 12) s. (Round to two decimal places as needed.) c. If of # 62, S, =3, and $2 = 2, and the sample sizes are n, = 10 and n2 = 10, construct a 90% confidence interval for the difference between the two population means. The confidence interval is |s (H1 - 12) SO. (Round to two decimal places as needed.)