please help in this statistics question, thanksss

all the information are provided in here

In the table below, select the most appropriate answer and fill in the horizontal line: (4 points)

Sample, non-random sampling, census, systematic sampling

(i) The head teacher of Yijin Class A intends to send the 4 highest male students in the class to participate in the inter-class three

People basketball game.

This is an example of ________________.

(ii) A youth center randomly selects 7 members from 70 male members and

6 female members are randomly selected from the 60 female members to carry out a "favorite extracurricular activity"

Investigation.

The 13 people selected were ________________ in this survey.

(iii) To ensure that the quality of the canned food meets the standard, the manufacturer adopts ______________,

In the production line, one can is taken every 500 cans for inspection, and a total of 150 cans are inspected.

(iv) To prevent the spread of coronavirus,

All candidates entering the examination room must pass a temperature test.

This is an example of ________________.

(b) A certain university wanted to understand the opinions of 12,038 students on online teaching last semester.

The Office of Academic Affairs intends to use a systematic sampling method to take a systematic sample with a capacity of 200 for investigation.

(i) Find the overall capacity. (1 point)

(ii) Find the value of the sampling interval. (3 points)

(iii) The number of students that should be excluded from the overall population. (3 points)

(iv) Under what circumstances is systematic sampling not completely random? (2 minutes)