Please help

1) Blood types in U.S. (including both positive and negative and excluding Rh factors) are; Type O about 43%, Type A 40%, Type B 12%, Type AB 5%. (Source: Stanford Blood Center) Do a Goodness of fit test at a = .05 level based on the data below from a recent study. Blood Type Observed (0) Expected (E) (0- E)/E (3 decimals) Type O 190 Type A 210 Type B 70 Type AB 30 [ = 500 x' = a) State Ho and Ha b) State d.f., a, Xo c) Find the appropriate test statistic, x d) Show a sketch of graph e) Make a decision to reject or fail to reject the null hypothesis and interpret