examples of a biased sample and an unbiased sample algebra homework help

1. OPEN ENDED Give examples of a biased sample and an unbiased sample. Explain your 
   reasoning.
2. Writing in Math Use the information on page 761 see attached to explain how surveys are used in 
   marketing. Find the margin of error for those who spend $249 or less if 807 mothers were 
   surveyed. Explain what this margin of error means. 

Disclaimer: It is illegal to use the research material ordered on this website for other than research purposes. You must quote the sources appropriately. The company bears no responsibility for the use of research work, not intended for education use, the work is sold as-is with the highest quality and service available and written by freelancers.