Questionnaire in area newspaper

Reference no: EM13981203

Comment on the following sampling designs:

a) A citizens' group interested in generating public and financial support for a new university basketball arena has published a questionnaire in area newspaper. Readers return the questionnaire by mail.

b) A departmental store that wishes to examine whether it is losing or gaining customers draws a sample from its list of credit cardholders by selecting every tenth name.

Reference no: EM13981203

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