A study showed that 64 of 180 persons who saw a photocopying machine advertised during the telecast
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A study showed that 64 of 180 persons who saw a photocopying machine advertised during the telecast of a baseball game and 75 of 180 other persons who saw it advertised on a variety show remembered the brand name 2 hours later. Use the \(\chi^{2}\) statistic to test at the 0.05 level of significance whether the differ-ence between the corresponding sample proportions is significant.
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Related Book For 
Probability And Statistics For Engineers
ISBN: 9780134435688
9th Global Edition
Authors: Richard Johnson, Irwin Miller, John Freund
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