Astatistic is said to be unbiased if: a. the survey used to obtain the statistic was designed so as to avoid even the hint of racial or sexual prejudice. b. the mean of its sampling distribution is equal to the true value of the parameter being estimated. c. both the person who calculated the statistic and the subjects whose responses make up the statistic were truthful. d. the value of the statistic from any sample is equal to the parameter being estimated. e. it is used for honest purposes only.

The interaction of individual choices because a type of fish is on the verge of extinction, the government imposes rules that prohibit fishing in the publicly owned spawning grounds. at first owners of fshing bouts complain about this restriction on where they can fish, but soon they notice that the number of adult fish swimming outside the protected area is much higher than it was before. with the restriction, each fishing boat ends up catching more fish than it did before the r which of the following principles of economic interaction best describes this scenario? o there is a tradeoff between equality and efficiency o markets usually lead to efficiency. o when markets do not achieve efficiency,government intervention can improve overall welfare o markets allocate goodseffectively