Question

A study was done to see if in a marathon, older siblings are more inclined to...

A study was done to see if in a marathon, older siblings are more inclined to run

with their younger siblings and finish together rather than distance themselves and actually

compete. A random sample of 10 pairs of siblings were tracked to see what rank they

finished in the race.

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Answer #1

Here, we would like to see if there is significant difference in the ranks of a pair of siblings.

If the difference between the ranks of a pair of siblings is low, it'll indicate that they tend to finish the race together, but if this difference is high it'll indicate that they distanced themselves.

Therefore, the variable of interest will the difference in the ranks of a pair siblings. The parameter of interest will be the mean of this difference.

We will conduct a paired t test.

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