12. [-/1 Points] DETAILS LARCAAPCALC2 16.3.026.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The probability distribution of the random variable x, the annual income of a family (in thousands of dollars) in a certain section of a large city, is shown in the table. Find E(x) and o. (Round your answers to three decimal places.) E(X) = thousand dollars O= thousand dollars X 30 40 50 60 80 P(x) 0.07 0.21 0.51 0.14 0.07 Need Help? Read It Master It Submit