I have attached the question in the photo below. All 3 parts are important. Thank you.

In a random sample of women who were married within 39 months and still living with their husbands, the women were asked to indicate whether they were "satisfied" or "unsatisfied" with their marital life. The two groups of women are then compared with respect to the duration of marriage. The results are as follow s: Duration of marriage Satisfied Unsatisfied (No. of months) (f ) (f2) 0 to 2 34 10 3 to 4 41 16 5 to 9 50 23 10 to 14 39 25 15 to 19 18 14 20 to 39 15 16 Total 197 104 You need to: (1) Explain which statistical procedure you would apply to determine whether there is a difference in duration of marriage between the two groups. (2) Construct a null hypothesis and an alternative hypothesis; (3) Test the null hypothesis at the significant level of 0.01 and explain the results