Some Researchers Have Conjectured That Stem-Pitting Disease in Peach-Tree Seedlings

Multiple Choice

Some researchers have conjectured that stem-pitting disease in peach-tree seedlings might be controlled with weed and soil treatment.An experiment was conducted to compare peach-tree seedling growth with soil and weeds treated with one of two herbicides.In a field containing twelve seedlings,six were randomly selected throughout the field and assigned to receive Herbicide A.The remaining six were to receive Herbicide B.Soil and weeds for each seedling were treated with the appropriate herbicide,and at the end of the study period the height in centimeters was recorded for each seedling.The following results were obtained. When ranking all the observations together,what rank should be assigned to the observations with a height of 77 centimeters?

A) 5.0
B) 5.5
C) 6.0
D) 6.5