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3) Un investigador de mercados y habitos de comportamiento afirma que el tiempo que los ninos de tres a cinco anos dedican a ver la

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3) Un investigador de mercados y habitos de comportamiento afirma que el tiempo que los ninos de tres a cinco anos dedican a ver la television cada semana se distribuye normalmente con una media de 22 horas y desviacion estandar 6 horas. Frente a este estudio, una empresa de investigacion de mercados cree que la media es mayor y para probar su hipotesis toma una muestra de 64 observaciones procedentes de la misma poblacion, obteniendo como resultado una media de 25. Si se utilize un nivel de significacion del 5%. Verifique si la afirmacion del investigador es realmente cierta

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