1. Parametric tests (such as t or ANOVA) differ from nonparametric tests (such as chi-square) primarily in terms of the assumptions they require and the data they use. Explain these differences.
2. Güven, 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 a =.01.