To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments.You are given the results below. $\begin{array}{lllll}\text { Treatment } &&{\text { Observations }} \\\text { A } & 20 & 30 & 25 & 33 \\\text { B } & 22 & 26 & 20 & 28 \\\mathrm{C} & 40 & 30 & 28 & 22\end{array}$
The null hypothesis for this ANOVA problem is

Question

To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments.You are given the results below.

\begin{array}{lllll}\text { Treatment } &&{\text { Observations }} \\\text { A } & 20 & 30 & 25 & 33 \\\text { B } & 22 & 26 & 20 & 28 \\\mathrm{C} & 40 & 30 & 28 & 22\end{array}

The null hypothesis for this ANOVA problem is

Quizplus · Accepted Answer

The null hypothesis for an ANOVA problem is that the means of all the treatments are equal. In this case, there are three treatments, so the null hypothesis is that $\mu$₁ = $\mu$₂ = $\mu$₃.

To Test Whether or Not There Is a Difference Between