Question

Guven, Elaimis, Binokay, and Tan (2003) studied the distribution of paw preferences in rats using a computerized food-reaching test. For a sample of n=144 rats, they found 104 right-handed animals. Is this significantly different from what would be expected if right- and left- handed rats are equally common in the population? Test with alpha=.01.

1) For a sample of n=144, what is the expected frequency for right- handed animals?

Answer 1

1) For a sample of n=144, what is the expected frequency for right- handed animals?

Expected frequency = 0.5*104 = 52

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