Answer:
C. A stratified sample is a sample within homogeneous subsets of the population.
Step-by-step explanation:
Stratified sample is a method of sampling in which small homogeneous subsets are formed known as strata which are used to study the whole population. These small subsets represents the whole population. This is random sampling method which is used widely. The benefit of using this sampling method is that the data is not overlapped.
Answer:
the number is 65
Step-by-step explanation:
the same number is added. so let the number be 'x'
the equation can hence be written as:
15 + x / 31 + x = 5 / 6
(now cross multiply)
6 (15 + x) = 5 (31 + x)
90 + 6x = 155 + 5x
6x - 5x = 155 - 90
x = 65
Answer:b b c
Step-by-step explanation:
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I think it’s 6 lmk if I’m right....
