Step-by-step explanation:
I'll help if you'd like
Step-by-step explanation:
D. must be the richt answer.
(x - Px)^2 + (y - Py)^2 = r^2
Where P(Px | Py) is the center of the circle.
If you insert one point of the circle, the equation must be true.
Answer:
b. Invalid, because the sample may not be representative of the population.
Step-by-step explanation:
A sample of around 10% of the population is needed to be representative.
In this question:
We have a population of 500,000, and a sample of 10,000.
10,000/500,000 = 1/50 = 0.02 = 2% of the population, so not representative, and option b is correct.
There is no rectangle but the formula is
