The temperature at any random location in a kiln used in the manufacture of bricks is normally distributed with a mean of 1200 and a standard deviation of 60 0 F. If bricks are fired at a temperature...

The temperature at any random location in a kiln used in the manufacture of bricks is normally distributed with a mean of 1200 and a standard deviation of 60
⁰F. If bricks are fired at a temperature above 1000
⁰F, they will crack and must be disposed of. If the bricks are placed randomly throughout the kiln the proportion of bricks that crack during the firing process is?