50 points ! PLEASE PLEASE HELP ASAP. WILL MARK BRAINLIEST The table lists the measured beats per minute of a random sample of participants before and after a 6-week running program. How many beats per minute greater is Group A's median heart rate than Group B's?

Enter your answer in the box.

Group A

(Beats per minute)

Group B

(Beats per minute)

73 78
70 77
70 71
61 64
77 61
51 65
78 78
66 76
61 72
68 57
68 62
77 55
76 63
66 73