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.
The answer is C.
Explanation: There are 3 x variables and on the other side you see 11.
So the answer is 3x = 11
90% of the milkshakes had whipped cream because 90/100 as a percentage is 90%
Answer:
0.5 mi (2640 feet)
Step-by-step explanation:
