please help explain this problem thank you

Question: I) Does marital status affect life satisfaction? Use the following data on life satisfaction scores by marital status to complete the questions. Xand = 15.5 Widowed (X) Divorced (X,) Never Married (X,) Married (X. 5 16 13 19 6 30 35 9 20 15 10 20 26 S 27 * 30 * = 4 X2- 9 XJ= 24 Xx= 25 a) State null and alternative hypotheses: Ho: mul=mu?=mu3=mu4 HAM. +.. My Ha: mulamu2zmu3zmu4 b) Fill in the following table: IDD I(x-R) = 161 N(X-X Grand)? = 661.25 361.25 457.25 c) Fill in the following table: Source of MS Variation Between groups 1635 20. 24 Within Groups 27.35 Total 2126