Please help with the following problems involving normal
distribution and populations.
Based off the three requirements that must be met before an
analysis of variance test (ANOVA) can be used:
1. Samples must be randomly selected from the populations to
be evaluated.
2. All populations from which the samples are selected must
have a normal probability distribution.
3. All the populations from which samples are selected must
have the same variance.
How might one know if the samples follow a normal
distribution?





