39.3k views
0 votes
El 1% de las videocámaras vendidas por la Phil´s Photo Shop, tiene un defecto en su estuche. Se seleccionan al azar cuatro estuches de lo vendido recientemente. Encuentre la probabilidad de que exactamente uno esté defectuoso

User Jagadeesan
by
4.2k points

1 Answer

7 votes

9514 1404 393

Answer:

3.88%

Explanation:

The probability that 1 is defective and 3 are not (out of four) is ...

P(1 of 4) = 4(0.01)(0.99)^3 ≈ 0.0388 = 3.88%

__

The multiplier of 4 comes from the number of ways that 1 can be chosen from 4.

User Alexander Staubo
by
5.0k points