Three trainee salespersons were being monitored for their level of sales. Salesperson A made a total of 440 sales in 5 days, salesperson B made a total of 630 sales in 7 days, and salesperson C made a total of 690 sales in 10 days. The sum of squares of all 22 daily sales is calculated as: Ex = 146,840. () Calculate the various entries in the one-way ANOVA table (p-values may be excluded). Show all details in your workings. (b) By performing the ANOVA test, comment on whether there is a significant difference among the average daily sales of the 3 salespersons? Justify your answer at a 5% level of significance.