Classify the sample statistics as biased or unbiased estimators of the corresponding parameters. For example, if the sample mean
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I have my work at the bottom but to explain you have to divide 30/12, and I got 2.5. That means 30 is 2.5 times bigger than 12. Because we have to find x, we have to divide 7/2.5, to find what is 2.5 times smaller than 7. That’s 2.8. So, x= 2.8
y - y₁ = m(x - x₁)
y - (-4) = 1(x - 8)
y + 4 = 1(x) - 1(8)
y + 4 = x - 8
- 4 - 4
y = x - 12