In general, 0.28 of all students default on their student loan debt. A sample of 542 students with student loan debt is randomly selected and it's found that 77 of them default. What is the population proportion ?

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.  

210/22 = 9.55

since he can't take part of a person to the game the answer is 9 people

hope this !