Sampling and Error Apply, algebra homework help

Lesson 8-5: Apply

OPEN ENDED Give examples of a biased sample and an unbiased sample. Explain your
reasoning.

Writing in Math Use the information on
page 761 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.

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