please answer these two questions below (pictures provided) thank you i will rate 5 stars if you can explain it as well, but all good if you do not have time! (5 stars regardless thanks!)

Project 2: Using a normal distribution of 5000 test scores with a mean of 72 and a standard deviation of 12. (1) What percentage of the scores is greater than a score of 80? (2) What percentage of the scores is below 66? (3) Between which two test scores does the middle 60% of scores lie? (4) Beyond which score does the lower 5% of the scores fall? (5) How many scores lie below the score in Step 4 above? (6) What test score is at the 25" percentile? Project 3: Using a random sample, a survey was conducted on women who were married within 39 months and remained married at the time of the survey. The women were asked to indicate whether they were "satisfied" or "dissatisfied" with their marital life, and classified in two groups accordingly. The following table compares the two groups of women with respect to the duration of marriage. The results are as follows: Duration of marriage Satisfied Dissatisfied (No. of months) (f1 ) (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