Answer: Simple Random
Step-by-step explanation:
- A simple random sampling technique is a random sample technique in which a subset of the population is drawn by the researcher . They are chosen in such a way that all the individuals in the population has an equal chance to get chosen .
Given : In a study, the sample is chosen by pulling 50 names from a hat .
Here the probability of each name to get selected is equal.
Thus, this is a simple random sampling method.
Answer:

Step-by-step explanation:
Given that,
The area of a triangle, 
Base, 
We need to find the height of the triangle.
The formula for the area of the triangle is given by :

So, the height of the triangle is
.
Answer:
Mental Math and Logic
Step-by-step explanation:
You might not have access to a calculator, so when times comes like this when you have to validate a statement if wrong or right, mental math comes in help.
You only need the approximate number to do something like mental math. Both numbers divided by each other, is really close to their whole numbers of 1 and 5, respectively. If you divide 1/5, you get 0.2, which is not what the answer is. 0.02 and 0.2 are very different answers, and you would not get 0.02 no matter how many decimals after that 1.0 and 5.0.
Which means the statement is not true based on logic and mental math.