Bacterial growth was measured at different temperatures. The density of bacteria (cells/ml) are given below. Use the 5% level of significance to conduct a regression to test the null hypothesis that the slope is equal to zero. Some calculations are provided below. Growth Temp. (C) X*X Y*Y X*Y (cells/ml) 12.0 65.0 144.00 4225.00 780.00 14.0 61.0 196.00 3721.00 854.00 12.0 76.0 144.00 5776.00 912.00 16.0 84.0 256.00 7056.00 1344.00 17.0 79.0 289.00 6241.00 1343.00 SUM: 71.0 365.0 1029.0 27019.0 5233.0 MEAN: 14.20 73.00 What is the slope of the line for bacterial growth as a function of temperature? O slope = 2.40 slope = 38.87 O slope = 3.74 O slope = 1.42