Use the Following Information for Questions

Short Answer

Use the following information for questions:
A researcher is hired by a company that sells appliances to investigate whether there is any difference in the average ratings that customers give to a DVD player between three different age groups. Sixty-eight people were asked to fill out a questionnaire and rate the DVD player by answering various questions (easy to use? looks nice? manual understandable?) after using it for a week. The scores (a value between 1 and 50) were recorded and a one-way ANOVA was performed. Partial SPSS output is provided below.
-One of the assumptions in ANOVA is that the standard deviation for the response (DVD assessment score) for each age group is the same. Give an estimate of that common standard deviation.