How do I solve this question. Isnt the T-test: Paired 2 sample mean supposed to have 2 sets of data output instead of a dummy column?

Q: A local sports science institution has developed a new training methodology that is supposed to increase an athlete's physical fitness. A trial test was commissioned where a random sample of 30 long distance runners aged 20-30 were selected from a local running club and were instructed to undergo the new training methodology for a continuous period of 30 days. The mean resting heart rate (in beats per minute, bpm) of the 30 runners at the end of the trial period is 62 bpm.

The chief scientist at the company claims that the new training methodology will result in resting heart rates of below 63 bpm for athletes and he presented the following statistical report:

t-Test: Paired Two Sample for Means

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