Treatment of wastewater is important to reduce the concentration of undesirable pollutants. One such substance is benzene, which is used as an industrial solvent. Two methods of water treatment are being compared. Treatment 1 is applied to seven specimens of wastewater, and treatment 2 is applied to ten specimens. The benzene concentrations, in units of milligrams per liter, for each specimen are as follows: Treatment 1 Treatment 2
X1-bar: 6.8 mg/L X2-bar: 5.7 mg/L
s1:0.9 mg/L s2: 1.6 mg/L
n1:5 n2:7

Required:
State the p-value to 4 decimal places or the critical value to 3 decimal places.