Question

13.20 Figure $13.6$shows side-by-side boxplots of independent samples from three normally distributed populations having equal standard deviations. Based on these boxplots, would you be inclined to reject the null hypothesis of equal population means? Why?

Short answer

The null hypothesis of population means can be rejected.

Step-by-step solution

Given information

In the given figure, shows side-by-side boxplots of independent samples from three normally distributed populations having equal standard deviations. Based on these boxplots, would you be inclined to reject the null hypothesis of equal population means

Explanation

Examine three normally distributed populations with equal standard deviations in box plots.
The box plots reveal that there is a lot of variety among the sample means in comparison to the variation within the samples.
As a result, the null hypothesis of population means can be rejected.