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El precio promedio de las acciones de las empresas que perteneces a S&P500 es de $30 y la desviacin estndar es $8.20. Suponga que los

El precio promedio de las acciones de las empresas que perteneces a S&P500 es de $30 y la desviacin estndar es $8.20. Suponga que los precios de las acciones estan distribuidos normalmente.

1. Cul es la probabilidad de que el precio de las acciones de una empresa sea a lo ms de $45?:

a. 0.034

b. 0.911

c. 0.9664

d. 0.322

2. Del total de 500 empresas, cuntas empresas se esperan que tengan precios entre $25 y $40?:

a. 310

b. 428

c. 309

d. 403

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