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Estadística. Serie Schaum- 4ta edición - Murray R. Spiegel.pdf (1)

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RESPUESTAS A LOS PROBLEMAS SUPLEMENTARIOS 521

8.41 a) 0.0028; b) 0.9172.

8.42 a) 0.2150; b) 0.0064; c) 0.4504.

8.43 0.0482.

8.44 0.0188.

8.45 0.0410.

8.47 a) 118.79 g; b) 0.74 g.

8.48 0.0228.

8.49 µ = 12 y σ 2 = 10.8.

A B C D

primera segunda media probabilidad

6 6 6 0.01

6 9 7.5 0.02

6 12 9 0.04

6 15 10.5 0.02

6 18 12 0.01

9 6 7.5 0.02

9 9 9 0.04

9 12 10.5 0.08

9 15 12 0.04

9 18 13.5 0.02

12 6 9 0.04

12 9 10.5 0.08

12 12 12 0.16

12 15 13.5 0.08

12 18 15 0.04

15 6 10.5 0.02

15 9 12 0.04

15 12 13.5 0.08

15 15 15 0.04

15 18 16.5 0.02

18 6 12 0.01

18 9 13.5 0.02

18 12 15 0.04

18 15 16.5 0.02

18 18 18 0.01

1

8.50 Distribución de probabilidad de X-barra para n = 2.

D E F G H

probabilidad xbarra p(xbarra)

0.01 6 0.01 D2

0.02 7.5 0.04 D3+D7

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