If actually the two colas are equally preferred in a larger


A blind taste test is done to compare Cola 1 and Cola 2. Among n = 75 participants, P^ =.64 is the proportion preferring Cola 1.

If, actually, the two colas are equally preferred in a larger population of tasters, p = .5 is the corresponding population proportion. Assuming that p = .5, find the value of the standardized statistic (z-score) for the sample proportion observed in the taste test.

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Basic Statistics: If actually the two colas are equally preferred in a larger
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