Fresh coff ee, II In Example 9.8, 72% of the subjects in
Chapter 9, Problem 9.24(choose chapter or problem)
Fresh coff ee, II In Example 9.8, 72% of the subjects in the experiment preferred fresh coff ee. Explain why this result does not prove that more than half of all coff ee drinkers prefer fresh to instant coff ee. Th e situations in Exercises 9.25 and 9.26 call for a signifi cance test. State the appropriate null hypothesis H0 and alternative hypothesis Ha in each case. Be sure to defi ne your parameter.
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