Answer:
a) cluster sampling
Step-by-step explanation:
In cluster sampling method, each member of a population is assigned to one and only one group.This means clusters are formed through probability method usually a simple random sampling.The participants in the clusters are the only one to be surveyed.
In this example, simple random sampling is used to identify 12 home rooms(cluster) where a group of 20 students (participants) in each room is given the survey.
Please see attached image with my answer.
Answer:
trapezoid
Step-by-step explanation:
Answer:
it should be 10.4 in 6 years.
Step-by-step explanation:
not sure what you were asking.
3.06, 3 1/6, 3 3/4, 3.8.
Hope that helps.