2.6. Two Population Hypothesis Testing

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To compare salary between two professions, which statistical test would be most appropriate? Assume that salary is NOT normally distributed.

10 points

An appropriate non-parametric test

Two sample z-test

Two sample t-test

An appropriate F-test

Clear selection

A study is going to check the difference in weight between African and Asian Elephant populations. Assume that the data is normally distributed. Which statistical method is most appropriate to answer this research question?

10 points

Two sample t-test

Two sample z-test

Two sample z-test for population

Paired t-test

Clear selection

A study is comparing the mortality rate between two different virus types. Which statistical test would be the most appropriate?

10 points

Two sample z-test for population

Two sample t-test

Two sample z-test for mean

Paired t-test

Clear selection

Tire wear is measured every 6000 miles on each tire. To test if there is any significant wear between 6000 miles, which statistical method is the most appropriate?

10 points

Two sample t-test

Paired t-test

Two sample f-test

Two sample z-test

Clear selection

Two computer manufacturers claim similar performance specifications. However, one of the brands is normally found to be most consistent and reliable. As the mean performance would be the same, the variability would be a question of interest in this case. Which statistical test is most appropriate to answer the research question?

10 points

Two sample t-test

Paired t-test

Two sample z-test

F-test

Clear selection

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