George works as the human resource manager at Maddy’s Confec…

George works as the human resource manager at Maddy’s Confectionaries. It was mandatory for his subordinates to obtain his signature on every document related to the hiring of a new employee. When he realized that this was increasing the duration of the hiring process, he told his subordinates that they no longer needed his signature unless the hire involved extraordinary circumstances. This is an example of: 

In 2005, 1,475,623 students heading to college took the SAT….

In 2005, 1,475,623 students heading to college took the SAT. The distribution of scores in the math section of the SAT follows a normal distribution with mean µ= 510 and standard deviation σ= 125.  Calculate the z-score for an SAT score of 470. Interpret it using a complete sentence.