Answer:
Systematic sampling
Step-by-step explanation:
An EPA contractor needing to test the concentration of a substance in ten samples out seventy samples provided form a single source at regular time intervals.
For the contractor to effectively carry out the testing he has to employ a Non-probability system of sampling which is called Systematic sampling, because in systematic sampling we can assume the population size (x ) which in this case is 70 and the sample size( n ) to be 10
He will have to select ; ( x / n )^th of the sampling frame for best results
Answer:
Steve
Step-by-step explanation:
Because it means greater than or equal to
Answer:
y= -2x+4
Step-by-step explanation:
You add half of the coefficient of x and square it.
What you do on one side,you must do it on the other.
C = b - a
explanation:
you just need to subtract a in this equation.
