Based on genotypes of parents, offspring are expected to have genotypes distributed as follows: 25% AA (healthy), 50% Aa (carrier), and 25% aa (diseased).Suppose for 90 randomly selected offspring you observe the following genotype frequencies: 22 AA, 55 Aa, and 13 aa. Using a 0.01 significance level, you need to test the claim that the observed genotype offspring frequencies follow the expected distribution of 25% AA, 50% Aa, and 25% aa. What is the value of the appropriate test statistic