November 25, 2015

Homework Help: Statistics and Probability

Posted by Adam on Wednesday, March 23, 2011 at 2:01am.

A research manager at Coca-Cola claims that the true proportion, p, of cola drinkers that prefer
Coca-Cola over Pepsi is greater than 0.50. In a consumer taste test, 100 randomly selected people
were given blind samples of Coca-Cola and Pepsi. 58 of these subjects preferred Coca-Cola. Is there
sufficient evidence at the 5% level of significance to validate Coca-Cola’s claim? Conduct an
appropriate hypothesis test using (i) the p-value method and (ii) the critical value method.

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