student decides to investigate how effective washing with soap is in eliminating bacteria. to do this, she tested four different methods: washing with water only, washing with regular soap, washing with antibacterial soap, and spraying hands with an antibacterial spray (containing 65% ethanol as an active ingredient). she suspected that the number of bacterial on her hands before washing might vary considerably from day to day. to help even out the effects of those changes, she generated random numbers to determine the order of the four treatments. each morning she washed her hands according to the treatment randomly chosen. then she placed her right hand on a sterile media plate designed to encourage bacterial growth. she incubated each play for 2 days at 360c360c, after which she counted the number of bacteria colonies. she replicated this procedure 8 times for each of the four treatments. the data for the bacteria study is given in the file bacteria.csv on canvas. remember that higher bacteria count means dirtier hands after washin