Supplier Order Date Arrival Date BP Lead Time Supplier Order Date Arrival Date EM Lead Time
Bryant Products 10/15/12 10/20/12 5 Elgin Metals 10/01/12 10/06/12 5
Bryant Products 10/20/12 10/27/12 7 Elgin Metals 10/03/12 10/08/12 5
Bryant Products 08/08/12 08/14/12 6 Elgin Metals 10/09/12 10/14/12 5
Bryant Products 09/01/12 09/10/12 9 Elgin Metals 10/07/12 10/12/12 5
Bryant Products 09/05/12 09/12/12 7 Elgin Metals 10/05/12 10/11/12 6
Bryant Products 10/25/12 11/03/12 9 Elgin Metals 10/15/12 10/20/12 5
Bryant Products 10/29/12 11/04/12 6 Elgin Metals 10/05/12 10/10/12 5
t-Test: Two-Sample Assuming Unequal Variances
BP Lead Time EM Lead Time
Mean 7 4.923076923
Variance 2 0.576923077
Observations 8 13
Hypothesized Mean Difference 0
df 10
t Stat 3.827958507
P(T<=t) one-tail 0.001664976
t Critical one-tail 1.812461123
P(T<=t) two-tail 0.003329952