Based on the information given, the statistics that appear to be unbiased estimators of the population parameter is statistics A.
<h3>
Solving the statistics.</h3>
It should be noted that statistic A is the unbiased estimator of the population parameter. This is because it's centered around the population parameter which is 75.
The statistic that would be a better estimate of the population parameter is statistic A. This is because the sample mean is equal to the population mean which is 75.
The statistic that would be a better estimator of the population parameter is statistic D since it's equal to the population means.
Lastly, it should be noted that statistic C has no distribution shape.
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F(x) = x² - 81
Finding f⁻¹(x) the inverse function
Let y = f(x) and solve for x.
y = x² - 81
y + 81 = x²
x² = y + 81
x = √(y + 81)
Recall f(x) = y, that means x = f⁻¹(y)
x = √(y + 81)
f⁻¹(y) = √(y + 81)
Therefore f⁻¹(x) = √(x + 81)
Y=2x+3
put x =0 onetime then y=3
now put y =0 2x+3
x= -3/2
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