Answer:
189
Step-by-step explanation:
you get this by taking 315 and mutiply it by 0.6 and get 189
Answer:
9.8%
Step-by-step explanation:
Given the following information

Total Number of Students =6+4+5+7+10+9=41
Number of Students aged 19-22 =4
Therefore:
The relative frequency for the class with a lower class limit of 19

120+10+5=135
I don't know if all you're supposed to do is add or not... so i may be wrong....