2. Which of the following statements is true? (A) A parameter is a number that describes some characteristic of a sample.
(B) An unbiased estimator is any statistic that is taken from a sample chosen by
random methods.
(C) A sampling distribution is the distribution of a statistic calculated from all possible
samples of the same size from the same population.
(D) The variability of a population distribution will decrease as the sample size
increases.
(E) A normal approximation can always be used for the sampling distribution of pas
long as the sample size is greater than 30.

how many players are there?

step-by-step explanation:

a: 1/6, j: 1/4

step-by-step explanation: you are welcome

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1

it is x equals 3   plese mark me really need it

step-by-step explanation: