225 * 2 = 450
If the elephant drinks 225 liters of water a day it would wrong 450 liters of water in 2 days because 225 * 2 = 450
2mm : 25'
half of the above
1mm : 25'/2 = 12.5'
20 has been added to the total of scores, so the new mean for the 20 scores will be 20/20 = 1 higher than it was.
The new population mean is 15+1 = 16.
I don’t even know :( sorry
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.
