If an estimator is unbiased, then A. the mean of the estimator is usually close to the true value. B. the estimator is usually close to the true value. C. the mean of the estimator is equal to the true value. D. the estimator is equal to the true value. The variance of an estimator measures A. how close the estimator is to the true value. B. how close repeated values of the mean of the estimator are to each other. C. how close repeated values of the estimator are to each other. D. how close the mean of the estimator is to the true value.

Adding and subtracting matricesfind the value of each variable. x = and y = would

Joseph haydn pet store offers wide variety of leashes for dogs. the store purchases one popular type of leash from its manufacturer for $4.38 each. joseph haydn pets marks up leashes at a rate of 238% of cost. what is the retail price of the popular leash?

You have learned about the six trigonometric functions, their definitions, how to use them, and how to represent them graphically. the sine, cosine, and tangent trigonometric functions can be paired with their reciprocal functions, cosecant, secant, and cotangent, respectively. think about how each function is related to its reciprocal function.how are the graphs of the reciprocal functions related to their corresponding original functions? what happens to the graphs of the reciprocal functions as x approaches the zeros of the original functions? describe how you would teach friends with different learning styles (visual-spatial, aural-auditory, verbal-linguistic, physical-bodily-kinesthetic, logical-mathematical, social-interpersonal, and solitary-intrapersonal) how to graph the reciprocal functions