Answer: (A) randomly selected elements within each of the strata form the sample.
Step-by-step explanation:
Stratified random sampling is a random sampling technique in statistics .
- It includes the partition of the entire population into sub-parts called strata.
- The strata are formed on the basis of the characteristics shared by members .
- After the formation of strata, researcher randomly selects participants from each strata to ensure that that the participant of every group must involve in the sample to represent each character.
Hence, the correct answer is :
(A) randomly selected elements within each of the strata form the sample.
Answer:
yes
Step-by-step explanation:
bc 20/2 is another way to fimd it which gets you 10
3x+2≤5(x-4)
distribute 5
3x+2≤5x-20
minus 3x both sides
2≤2x-20
add 20 both sides
22≤2x
divide by 2
11≤x
x≥11
Answer:
Therefore the company made 510 liters of Drink A and (510+80)=590 liters of Drink B.
Step-by-step explanation:
Let, the company make x liters of drink A
The company makes drink B of (80+x) liter. Since the company make 80 more liters of Drink B than liters Drink A .
Given drink A contains 20% real fruit.
Therefore x liters of drink A contains 
liters
liters real fruit.
Drink B contains 5% real fruit juice.
(80+x) liters of drink B contains 
liters 
liter real fruit.
The company used 56.5 liters of real fruit juice to make Drink A and Drink B.
According to the problem,
⇒80+5x = 56.5×20
⇒80+5x=1130
⇒5x=1130-80
⇒5x=1050
⇒x=510
Therefore the company made 510 liters of Drink A and (510+80)=590 liters of Drink B.
