The following pairs of measurements of water temperature T i

The following pairs of measurements of water temperature (T, in degrees Celsius) and reaeration coefficient (R) were made in a stream. (a) Make a plot of reaeration versus temperature. (b)Test the hypothesis of no relation (i.e. =0) between reaeration and temperature at the 0.05 level of significance.

(T,R) : (14,2.89) (23,4.20) (17,4.17) (11,3.69) (20,3.78) (15,3.56) (18,3.35) (11,2.69) (25,3.58) (19,3.06) (13,2.41) (24,3.30) (16,3.05) (23,4.18) (21,4.08)

Solution