C. elegans, a nematode or "round worm," is a model organism in biology. A group of AP biology students was investigating behavior in C. elegans.
C. elegans feeds on bacteria, a particular strain of E.coli OPI150. Students placed the nematodes on a Petri dish with four choices: $NaCl$, water, a solution of E.coli, or no solution added, as seen in the image below. After ten minutes, students recorded the location of the C. elegans and recorded their data in the data table.
Which of the following is the null hypothesis for this experiment?
|Location||Number of C. elegans|
|E. coli solution||58|