In the process of designing aircraft seats, it was found that men have hip breadths with a mean of 36.6cm and a standard deviation of 2.5 cm. Consider the values of hip breadths of men that are usual.

a.What are the z-scoresthat separate the usual hip breadths from those that are unusual?___________________

b.What are the hip breadthsthat separate the unusual hip breadths from those that are usual?___________________

c.If a man has a hip breadth of 42 cm, is that considered usual or unusual? Justify your response.