A corporation that manages several local nursing homes has a labor contract with its staff of nurse's aides. The contract states that any employee layoffs of
nurse's aides must be based on years of service with the company (seniority). A
cutoff value is determined, and any employee whose seniority is less than the
value is laid off. Suppose "years of service" for this group of nurse's aides is
normally distributed with u = 15 years and o = 5 years. If 10% of the nurse's aides
are to be laid off, what is the cutoff point?
8.6 years
11.5 years
10.8 years
12.8 years
20.5 years