Question

a cell phone company wants to determine the average amount of data that their smart phone customers use each month. which group would best represent a sample of the population? one thousand of their customers with the most expensive monthly plans one thousand of their customers who most recently signed up with the company one thousand of their customers with a current smart phone data plan one thousand of their customers who called in for technical support

Explanation:

Para determinar el promedio de datos usados, se debe elegir una muestra que represente a todos los clientes que usan datos. Los clientes con planes de datos actuales son una muestra representativa, mientras que los otros grupos son sesgados. Los clientes con planes caros, los recién afiliados y los que llaman a soporte técnica no representan necesariamente a todos los clientes que usan datos.

Answer:

C. one thousand of their customers with a current smart phone data plan