Generates a random sample of participant IDs without replacement.
Examples
random.sample(3000, 25)
#> [1] 3 256 302 414 441 666 757 785 786 812 888 966 1150 1275 1348
#> [16] 2268 2360 2367 2396 2661 2774 2789 2915 2957 2960
# Should return random numbers such as:
# [1] 37 94 134 186 212 408 485 697 722 781 998 1055
# [13] 1182 1224 1273 1335 1452 1552 1783 1817 2149 2188 2437 2850 2936