i am stuck on these questions and do not know how to do it.

?}Approximatelv 5% of cellphones coming out of the production lines have a defect. Fifty cellphones are randomly selected from the production line. and tested for defects. [2 marks] What kind of probability distribution is this? What probability formula would you use to find the prohahilitvr that 2 cell phones are defective? B}The length of a cube is determined by rolling a standard die. The volume of the cube is then calculated. [2 mark] What type of probability:r distribution is this? What is the expected value formula you will use for the volume of the cube