The American Mineralogist (Oct. 2009) published a study of the evolution of uranium minerals in the Earth's crust. Researchers estimate that the trace amount of uraniun distribution ranging between 1...

Extracted text: The American Mineralogist (Oct. 2009) published a study of the evolution of uranium minerals in the Earth's crust. Researchers estimate that the trace amount of uraniun distribution ranging between 1 and 3 parts per million. Complete parts a through c. a. Find E(x) and interpret its value. Select the correct answer below and fill in the answer box to complete your choice. (Simplify your answer.) O A. E(X)= .This value gives the minimum parts per million of uranium for the collection of all reservoirs on the Earth. O B. E(X)= This value gives the maximum parts per million of uranium for the collection of all reservoirs on the Earth. O C. E(x) = 2 . This value gives the mean parts per million of uranium for the collection of all reservoirs on the Earth. O D. E(X)= . This value gives the mean parts per million of uranium in each reservoir on the Earth. b. Compute P(2<><2.6).><><2.6) =="" .3="" (type="" an="" integer="" or="" decimal="" rounded="" to="" two="" decimal="" places="" as="" needed.)="" c.="" compute="" p(x=""><2.09).><2.09) =="" (type="" an="" integer="" or="" decimal="" rounded="" to="" three="" decimal="" places="" as="">