How to solve this question?

This question is under Chapter: Analysis of Variance. (Statistics Course)

I need your help to prepare step by step like I need in the second photo, I really appreciate it if you can show the step correctly for the 10 Marks in this question.

3. A consumer magazine rated dishwashers as excellent, very good and good. He has collected the average price (RM) data and the summary of this data is shown in Table 2. At a=0.10, is there any difference in the average prices of the machines rated? Table 2. Summary of dishwasher average prices (in Ringgit Malaysia, RM) Excellent Very good Good 565 330 350 400 840 379 369 510 280 550 470 320 460 380 400 375 X1 = 457.33 X1 = 484.17 X1 = 332.25 $7 = 6912.67 $7 = 34804.17 ST = 1793.58 [10 marks]Step 1: State the hypothesis and identify the claims step 2 = Find the critical value. Step 3 = Compute the test value 9 ) Find the mean and variance of each sample. b) Find the grand mean ( ) Find the between - group variance d ) Find the within - group variance e) Find the F test value. Step 4: Make the decision. step 5: Summarize the results