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sergeinik
3 months ago
6

The manager of a vacation resort believes the ages of adult visitors to the resort can be modeled by a normal distribution

Advanced Placement (AP)
1 answer:
Fittoniya [250]3 months ago
8 0

El gerente de un resort vacacional considera que las edades de los visitantes adultos pueden ser representadas mediante una distribución normal. El gerente llevó a cabo una encuesta a una muestra aleatoria de 765 visitantes y registró sus edades. Un resumen de las respuestas se presenta en la tabla de frecuencias, donde x representa la edad del visitante.

(a) Elabore un histograma de la distribución de edades.

(b) Escriba algunas frases para describir la distribución de edades de los visitantes adultos del resort.

(c) ¿Proporciona el histograma evidencia convincente de que las edades encuestadas provienen de una distribución normal? Justifique su respuesta.

Edad (años) Frecuencia

20≤x<30 160

30≤x<40 130

40≤x<50 100

50≤x<60 115

60≤x<70 125

70≤x<80 135

Answer:

Explanation:

a) Un histograma es, en esencia, un gráfico de barras de la información. En este caso, el histograma mostrará las edades en la parte inferior (eje x horizontal) y las alturas de cada barra corresponderán al número en ese rango de edad (frecuencia)... Consulte el archivo adjunto para el histograma

b) Una vez que tenga el histograma, describo la forma general.

¿Tiene forma de campana (con la barra más alta en el medio y disminuyendo a medida que te alejas)?

¿Es rectangular?

¿Es como una curva de campana inclinada?

Su forma da información sobre la naturaleza de los datos que puede ofrecer pistas sobre lo que parece la población.

Dado que tiene forma de una U estirada, se refiere a una relación no lineal entre dos variables, en particular, la edad depende de su frecuencia.

C. No, porque dado que la curva del histograma no tiene forma de campana, no puede ser una distribución normal.

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