Question

biological oxygen demand (BOD) is an index of pollution that is monitored in the treated effluent of paper mills on a regular basis. form 43 determined nations of BOD (in pounds per day) at a particular paper mill during the spring and summer months, the mean and standard deviation were found to be 3246 and 757, respectively. the company has set the target that the mean BOD should be 3000 pounds per day. Do the sample data indicate that the actual amount of BOD is significantly off the target? (use alpha = .05)

Answer 1