We consider an i. I.D. Sample fR1, R2, .., RN g and an estimator (MLE) of σ 2 deÖned by σb 2 = 1 2N N ∑ i=1 R 2 i Question 1: Show that σb 2 is an unbiased estimator of σ 2 .

Me! #1 write an equation for the interior angles of this triangle that uses the triangle sum theorem. #2 what is the value of x? #3 what is the measure of #4 classify the triangle above as acute, obtuse, or right. state your reason in a complete sentence.

When you are making a circle graph by hand, how do you convert a number for a part into its corresponding angle measure in the circle graph? when you are making a circle graph by hand, what should you do if one of your angle measures is greater than 180°?

What is the y intercept of f(x)=(1/2)^x?