SOLVED: The author purchased a slot machine (Bally Model 809 ), and tested it by playing it 1197 times. When testing the claim that the observed outcomes agree with the expected frequencies,
Bally 809 P Slot Machine re-birth ! - YouTube
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Bally Slot Makinesi 809-B iki oluşum Çevrimi Nedir? BahisPlatform Bahis Forum
Bally 809-zt Slot Machine With Key, 25 Cent, 3 Reel, Works and Pays out. (This lot Has A low Reasonable Reserve) Includes Stand. Very Heavy Bring Help To Load | Bloomington Tool
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Lot - BALLY QUARTER SLOT MACHINE
809 - Slot Machine by Bally Manufacturing Co.
Bally Model 809-B Table Top Slot Machine Circa 1967 | #1912552846
My BALLY 809 Multiplier
BALLY E SERIES 809, 831, 873 Slot Machine Parts Catalog | eBay