A Phycologist Is Interested in Determining the Proportion of Algae

A phycologist is interested in determining the proportion of algae samples from a local rivulet that belong to a particular phyla, and he believes the phyla should be uniformly distributed. A simple random sample of 60 alga was obtained, and each was categorized as being a member of Rhodophyta, Chlorophyta, or Heterokontophyta. The observed counts were 25, 25, and 10, respectively. What is the null hypothesis for the phycologist's test?

A) H₀: p₁= p₂ = p₃ = 1/3
B) H₀: p₁= 1/15, p₂ = 1/25, p₃ = 1/10
C) H₀: p₁ = 15/60, p₂ = 25/60, p₃ = 10/60
D) Impossible to determine from the given information