Yes, that formula doesn’t make sense (you forgot the 1⁄2, by the way). I believe 8.52/8.53 should not have a minus there and 8.54 should have a minus that it’s missing. Also 8.52 should have expected values or big-O probability notation. This is a frequentist calculation so I’d suggest a more standard reference like Ferguson
Yes, that formula doesn’t make sense (you forgot the 1⁄2, by the way). I believe 8.52/8.53 should not have a minus there and 8.54 should have a minus that it’s missing. Also 8.52 should have expected values or big-O probability notation. This is a frequentist calculation so I’d suggest a more standard reference like Ferguson