Manually picking numbers in the range of 1–15 for your first selection does not give you a statistical edge because you are selecting specific combinations, not ranges.
While it is true that the winning combination as a whole almost always features a small number in the lowest position, every specific 5-number combination has the exact same probability of being drawn.
The Probability Fallacy
When you look at the entire game of Powerball (picking 5 numbers from 1 to 69), there are 11,238,513 total possible 5-number combinations:
Specific Combination vs. Category:
The combination 1 - 2 - 3 - 4 - 5 has a lowest number of 1.
The combination 40 - 50 - 55 - 60 - 65 has a lowest number of 40.
Both of these exact, specific sets of 5 numbers have the exact same chance of being drawn: 1 in 11,238,513.
Why 1–15 "Appears" to Win More Often:
There are millions of unique 5-number sets whose lowest number falls between 1 and 15.
There are only 43,680 unique 5-number sets whose lowest number is 40 or higher.
A number between 1 and 15 appears in the low ball position most of the time simply because that category contains over 70% of all valid combinations, not because individual numbers inside that range are favored by the draw.
Summary
When you fill out a Powerball play sheet, you aren't betting on a general range (like "the lowest ball will be under 15"). You are betting on one single, precise combination of 5 numbers.
Because every valid 5-number combination is drawn with equal probability, selecting a low number for your first pick does not increase your odds of winning the jackpot.