The manufacturer of a low-calorie dairy drink wishes to compare the taste appeal of a new formula (formula B) with that of the standard formula (formula A). Each of four judges is given three glasses in random order, two containing formula A and the other containing formula B. Each judge is asked to state which glass he or she most enjoyed. Suppose that the two formulas are equally attractive. Let Y be the number of judges stating a preference for the new formula. 2.1.1 How can the mean and standard deviation be calculated (2). 2.2.2 Interpret the mean = 1.3333 and the standard deviation = 0.9428 of Y (2).

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