Let S be the surface defined by the equations
,
, oriented with unit
normal pointing outwards. Evaluate
(1) SS(x + y +z) dA
(ii) S (xzi + xj+z∧2K) dA

Asix-sided die of unknown bias is rolled 20 times, and the number 3 comes up 6 times. in the next three rounds (the die is rolled 20 times in each round), the number 3 comes up 6 times, 5 times, and 7 times. the experimental probability of rolling a 3 is 10 %, which is approximately % more than its theoretical probability. (round off your answers to the nearest integer.)