In a recent issue of the IEEE Spectrum, 84 engineering conferences were announced. Four conferences lasted two days. Thirty-six lasted three days. Eighteen lasted four days. Nineteen lasted five days. Four lasted six days. One lasted seven days. One lasted eight days. One lasted nine days. Let X = the length (in days) of an engineering conference.(a) Organize the data in a chart. (Round your answers to four decimal places.)(b) Find the first quartile.(c) Find the third quartile.(d) Find the 65th percentile.(e) Find the 40th percentile.(f) The middle 50% of the conferences last from.......days to........ days.