. An experiment was performed on a certain metal to determine ifthe strength is a function of heating time (hours). Results basedon 25 metal sheets are given below. Use the simple linearregression model. ?X = 50 ?X2 = 200 ?Y = 75 ?Y2 = 1600 ?XY = 400Find the estimated y intercept and slope. Write the equation of theleast squares regression line and explain the coefficients.Estimate Y when X is equal to 4 hours. Also determine the standarderror, the Mean Square Error, the coefficient of determination andthe coefficient of correlation. Check the relation betweencorrelation coefficient and Coefficient of Determination. Test thesignificance of the slope.
