Generates a random sample of participant IDs without replacement.
Examples
random.sample(3000, 25)
#> [1] 21 43 218 228 249 417 533 876 949 999 1051 1116 1372 1539 1546
#> [16] 1566 1615 1707 2093 2096 2201 2380 2395 2413 2807
# 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