show step by step through minitab

Is there a difference in the satisfaction rating of traditional cell phone providers who bill for service at the end of a month often under a contract and prepaid cell phone service providers who bill in advance without a contract? The file Cellphone Providers contains the satisfaction rating for 10 traditional cell phone providers and 13 prepaid cell phone service providers. a Assuming that the population variances from both types of cell phone providers are equal, is there evidence of a difference in the mean ratings between the two typer of cell phone providers? (Use a = 0.05.) b. Find the p-value in (a) and interpret its meaning. What other assumption is necessary in (a)? c. C1-T C2-T C3 C4 C5 C6 CellPhon... Type Rating 1 Consume... Traditional 89 2. 88 Ting Traditional Grat Celly... Traditional 3 79 4 Credo M... Traditional 78 5 76 Virgin Mo... Traditional U.S. Cell... Traditional 6 73 7 T-Mobile Traditional 73 8 Verizon... Traditional 70 9 AT&T Traditional 68 10 67 11 87 12 Sprint Traditional Republic... Prepaid Cricket Prepaid Page Plu... Prepaid Straight... PrePaid 85 13 84 14 80 15 TracFone Prepaid 79 16 MetroPCS Prepaid 78 17 Virgin Mo... PrePaid 76 18 Net10 Prepaid 76 19 Boost Mo... Prepaid 75 20 T-Mobile Prepaid 74 21 Verizon... Prepaid 70 22 AT&T Prepaid 70 23 Sprint Prepaid 66 24 25 26