One of Maple Ledger’s 50 invoices is drawn at random; P(late) = 0.24, P(error) = 0.16 and P(late and error) = 0.06. Compute P(late or error). Tolerance ±0.005.
One of Maple Ledger’s 50 invoices is drawn at random; P(late) = 0.24, P(error) = 0.16 and P(late and error) = 0.06. Compute P(late or error). Tolerance ±0.005.
Answer
0.34
Cells - P(late or error) · ±0.005 P(A ∪ B) = P(A) + P(B) − P(A ∩ B) = 0.24 + 0.16 − 0.06 = 0.34. The overlap is in both margins and is removed once. Check by cells: (3 + 9 + 5)/50 = 17/50.
IBS1 §3.3 (addition rule), §3.5 (Venn diagrams), CC BY 4.0 — shape only; original dataset