You work for a large farm with many fields of corn. You are investigating the mass of a sample of ears of corn. You gather the following data: ( Mass(g) of ears of corn 614.6 638.3 562.5 672.9 629.4 528.6 456.5 568.1 767.7 373.2 489.5 388.1 677.7 Checksum: 7367.1 Copy to Clipboard Some of the masses in the sample seem much larger than the rest. You decide to make several calculations describing the "spread" of the data set. You hope to use them to help in the search for outliers. Find the following using the Excel Spreadsheet (quartile.inc function: a) IQR 182.6 b) sample standard deviation 117 c) Apply the 1.5 IQR rule to search for outliers. Report the lower and upper cuttoffs. Lower: Upper: Are there any outliers by the 1.5 IQR rule? (Enter "yes" or "no") d) Apply the 2-standard deviation rule to search for outliers. Report the lower and upper cutt-offs. Lower: Upper: Are there any outliers by the 2-standard deviation rule? (Enter "yes" or "no")