Answer: c. Stratified sampling
Step-by-step explanation:
Stratified sampling is a sampling method in which the studied population is divided into separate groups or subgroups known as strata, there after a simple random sample can then be drawn from each separate or subgroups.
One of the main merit of stratified sampling is that it helps to reduce the size of sample required to get accurate result.
Unlikely because 2 girls over 7 children is less then 50%
<span>8 5/9 + 1 1/5
8+1 = 9
5/9 + 1/5 = 25/45 + 9/45 = 34/45
9 34/35 is the answer</span>
Number b will the right answer
