1. A random sample of 5 year old children is evaluated for being left- or right-handed. The sample size is n = 100 children of which 79 are right-handed, 15 are left-handed, and 6 use both hands equally. According to genetic analyses, the expression of the dominant gene for handedness is highly correlated with actual handedness. Test the following hypothesis based on the sample given above at a significance level of = 0.05.

A. H0: p1= p2= p3= 0.33;

B. H1: at least two of the probabilities are not the same

2. Define the following words:

A. Sensitivity

B. Specificity

C. Accuracy

D. Test of homogeneity