this is a probability question

QUESTION 3 [20 MARKS] Suppose in an industrial experiment that an engineer is interested in how the mean tensile strength of steel varies from machine to machine. A random sample of five products from each machine is collected as shown in Table 3. Table 3 Machine 1 Machine 2 Machine 3 Machine 4 45 21 37 16 59 12 32 11 48 14 15 20 46 17 25 21 38 13 39 14 Perform the analysis of variance (ANOVA) at the 0.05 level of significance and indicate whether or not the mean tensile strengths of steel differ significantly for the four machines. (20 marks)