Usted es el vicepresidente de un concesionario de automvile.pdf

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El vicepresidente de un concesionario de automóviles necesita calcular el límite de confianza del 95% para la ganancia promedio por vehículo basado en los datos de 20 vendedores que trabajaron ese día. Al día siguiente, puede obtener los datos faltantes de los otros 20 vendedores, por lo que debe recalcular el límite de confianza e informarle a su jefe cuál es la ganancia promedio real en la empresa.

Formation

Usted es el vicepresidente de un concesionario de automviles. Su jefe se le acerca una tarde y le
pregunta si podra decirle cul es la ganancia promedio por vehculo que obtiene la concesionaria.
Quiere la informacin para el final del da. Suena bastante fcil, excepto que cada vendedor realiza
un seguimiento de su ganancia promedio por vehculo y solo 20 vendedores de los 40 empleados
trabajan en el concesionario en un da determinado. Usted recopila la informacin a continuacin de
los vendedores actualmente en turno. Quiere darle a su jefe una respuesta en la que tenga un
95% de confianza. Qu le dice?
Pregunta 1:
Calcule el lmite de confianza inferior y superior en funcin de esta informacin.
Ingrese el nombre de los puntos de datos que necesita para resolver esto.
Pregunta 2:
Al da siguiente, su jefe se acerca a usted y le dice que revis la declaracin que hizo y le pregunta si
est seguro de su respuesta. Da la casualidad de que los otros 20 vendedores estaban en el
trabajo ese da y usted puede recopilar los puntos de datos restantes. Qu le dices a tu jefe?
Pregunta 3:
Calcule el lmite de confianza inferior y superior en funcin de esta informacin.
Pregunta 4:
Con base en los hallazgos anteriores, cul le dir a su jefe que es la ganancia promedio en la
empresa?
Beneficio promedio por vehculo
$ 5,125.00 $ 1,850.00 $ 4,620.00 $ 3,448.00 $ 2,158.00
$ 2,689.00 $ 4,896.00 $ 6,411.00 $ 5,128.00 $ 4,169.00
$ 1,689.00 $ 4,855.00 $ 2,177.00 $ 3,891.00 $ 4,588.00
$ 3,485.00 $ 3,489.00 $ 2,488.00 $ 4,812.00 $ 2,588.00

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