4. Sales Associates from a store branch in California have an average commission of $2500 and a standard deviation of $70. Sales Associates from a store branch in New York have an average commission of $7000 and a standard deviation of $210. A sales associate in California made $2610 last year in commissions and a sales associate in New York made $7230 last year in commissions. Which of the two associates did better relative to their coworkers? Calculate their z-scores and explain your results including all your Excel Calculations