A reliable assay shows that the ATP (adenosine triphosphate) content of a certain cell type is 111 mol/100 mL. You developed a new assay, which gave the following values for replicate analyses: 117,...

A reliable assay shows that the ATP (adenosine triphosphate) content of a certain cell type is 111 mol/100 mL. You developed a new assay, which gave the following values for replicate analyses: 117, 119, 111, 115, 120 mol/100 mL (average  116.4). Does your result agree with the known value at the 95% confidence level?