The strength shoe is a modified athletic shoe with a 4-m platform attached to th

Question

The strength shoe is a modified athletic shoe with a 4-m platform attached to the front half of the sole. Its manufacturer claims that this shoe can increase a person’s jumping ability. To investigate this claim, we will take a random sample of 24 people and randomly assign 12 of these people to wear ordinary shoes and the other 12 to wear the strength shoes for two weeks. After the two weeks, we will measure their jumping abilities.

What are the observational units in this study?

Is this study an observational study or an experiment? Explain how you know.

Identify the treatment (explanatory) variable and the outcome (response) variable in this study. Also classify each variable as categorical, binary, or numerical.

                 Treatment variable: ____________________            Type: ____________________

                Outcome variable: ____________________            Type: ____________________

Explanation / Answer

What are the observational units in this study?

Jumping ability

This is an experimental study. In an experiment investigators apply treatments to experimental units (people, animals, plots of land, etc.) and then proceed to observe the effect of the
treatments on the experimental units.

Treatment variable: strength of shoe and it is of type numerical

Outcome variable: the jumping ability of the person and it is of type numerical

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