Suppose that you suspect nutrient overload in a stream water, especially phosphorous. It is generally considered that the upper limit of phosphorous amount in natural water is 0.05 mg/L. You want to test whether the stream has larger amount of phosphorus that this upper limit. You randomly take a water sample of size 16 from the stream. The mean phosphorous amount in the sample is 0.053 mg/L and the standard deviation is 0.008 mg/L. What is the value of in this hypothesis test?