One of the first steps in calculating the paired-­samples t statistic is:

One of the first steps in calculating the paired samples or dependent-samples t statistic is creating a difference score for each participant in the sample.
Paired-samples t-test (within-groups design) are used when comparing two samples and every participant is in both samples.

You need to divide 210 square inches by 35 inches and that’s going to give you 6 inches and that’s the length of the hypothenuse of the right triangle i hope that this you : )

Answer: c. x y2 04 66 16