A  semiconductor  manufacturer  produces devices  used  as  central  processing  units  in personal  computers. The speed of the devices (in  megahertz)  is  important  because  it determines  the  price  that  the  manufacturer can  charge  for  the  devices.  The  following table  contains  measurements on 120  devices. a.  Calculate  the  sample  mean,  sample variance,  and  standard  deviation. b.  Find  the  median  and  quartiles  for  the  data. c.  Construct  a  box  plot  of  the  data.  Find  the  interquartile  range  and  determine  the  number  of  outliers

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