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confianza.py

+import csv
+import math
+
+def confianza(xa, xb, sa, sb, na, nb):
+    d = xa - xb
+    s = math.sqrt(((sa ** 2) / na) + ((sb ** 2) / nb))
+    intervalo = (d - 1.96 * s, d + 1.96 * s)
+    return intervalo
+
+print(confianza(11226, 3342.3, 7350.85, 1651.23, 1912, 6424))
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