Preliminary data analyses indicate that it is reasonable to consider the assumptions for one-way ANOVA satisfied. UseMinitab to perform the required hypothesis test using the p-value approach.
-At the 0.025 significance level, do the data provide sufficient evidence to conclude that a difference exists between the population means of the three different brands? The sample data are given below.

Question

Quizplus · Accepted Answer

The Answer is

\mathrm { H } _ { 0 } : \mu _ { 1 } = \mu _ { 2 } = \mu _ { 3 } \cdot \mathrm { H } _ { \mathrm { a } } :

Not all the means are equal.

\begin{array} { l } \alpha = 0.025 \ p = 0.001 \end{array}

Reject the null hypothesis. There is sufficient evidence to conclude that a difference exists between the population means of the three different brands.

Preliminary Data Analyses Indicate That It Is Reasonable to Consider