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.
D is the bast answer for this question, but, the equation should be (78-54)/3=p.
Answer:
A
Step-by-step explanation:
If x is the number of shirts you multiy by 15. 2.25 is the additional cost
Let the line segment BD be x, then sin A = x/15
or, x = 15sinA
Also
The last option
Answer:1: P 2: d 3:a
Step-by-step explanation:
