A population has distribution
Let X 1 and X 2 be independent and each have the same distribution as the population.

(a) Find the expected value and variance of X 1 .
(b) Determine the missing elements in the table for the sampling distribution of $\bar{X}$ = (X1 + X2) / 2

(c) Find the expected value and variance of $\bar{X}$.
(d) If the sample size is increased to 25, give the mean and variance of $\bar{X}$

Question

A population has distribution
  Let X 1 and X 2 be independent and each have the same distribution as the population.

(a) Find the expected value and variance of X 1 .
(b) Determine the missing elements in the table for the sampling distribution of $\bar{X}$ = (X1 + X2) / 2
  
(c) Find the expected value and variance of $\bar{X}$.
(d) If the sample size is increased to 25, give the mean and variance of $\bar{X}$

Quizplus · Accepted Answer

The Answer of   A population has distribution
  Let X 1 and X 2 be independent and each have the same distribution as the population.

(a) Find the expected value and variance of X 1 .
(b) Determine the missing elements in the table for the sampling distribution of $\bar{X}$ = (X1 + X2) / 2
  
(c) Find the expected value and variance of $\bar{X}$.
(d) If the sample size is increased to 25, give the mean and variance of $\bar{X}$

A Population Has Distribution Let X1 and X2 Xˉ\bar{X}Xˉ

A Population Has Distribution
Let X₁ and X₂ $\bar{X}$