To convert decimal over to percent, we move the decimal place two places to the right. So 0.5 becomes 50%.
Answer:

Step-by-step explanation:
percentage of graduates with loan = 62%
total sample = 50
Number of student in the sample with student loan
= (percentage of graduates with loan) x (total sample)
= 62% x 50
= 31
Proportion of student in the sample with student loan = 
Answer:
k=4
Step-by-step explanation:
Im not sure but CBA i think it has to do with some bank