Company $x$ is working with the thickness data for a particular plate and have

determined that their data represents a normal curve. The would like to

determine what percentage of the plates from the samples taken are below

$0\mathrm{.}0624$ mm and above $0\mathrm{.}0629$ mm $.$ From the data they calculated an average

of $0\mathrm{.}0627$ and a standard deviation of $0\mathrm{.}00023.$