SPA Corporation has about $23,500$ employees who serve as security guards. The average length of service for these employees is $9\mathrm{.}3$ years with a standard

deviation of $4\mathrm{.}2$ years. Compute the length of service for each employee. Round to the nearest one$-$tenth of a year.

A time in service with a z$-$score of $1\mathrm{.}3$

A time in service with a z$-$score of $-0\mathrm{.}5$