Question: The effect of temperature on the pH of skim milk was studied by a researcher. The variable x = temperature (C) under specified experimental condition and y = mild pHThe data is given below.

x 4 4 24 24 38 38 40 45 50 55 56

y 6,85 6,79 6.65 6.72 6.62 6.57 6.52 6.50 6.48 6.42 6.41

y 6.38 6.34 6.32 6.34

Do these data strongly suggest that there is a negative linear relationship between temperature and pH? State and test the relevant hypotheses using a significance level of 0.01.