woodridgems
contestada

A pharmacy wants to survey its customers to find out which brand of toothpaste they prefer.

Which survey methods are likely to be biased?

Respuesta :

AwesomeChocolate
One hundred people from the pharmacy’s customer list are selected at random, called on the phone, and asked.  
or 
Those customers who buy toothpaste with a coupon are selected, and the toothpaste brand they purchased is recorded.

Otras preguntas