7. The blood types of 262 black homicide victims in Philadelphia have a distribution with 50% Type 0, 25% Type A, 20% Type B, and 5% Type AB. Blood Type O A B AB Total Frequency (0) 136 72 47 7 262 Expected Frequency (E) E = np; n = 262 (0-E) E a. What is the expected frequency in each category? Complete the table. b. Compute x' = >" (0-E) by completing the table above. Compute the P - value E using: [2ND[VARS]-> x' cdf (x], E99, df ) = P-value] c. At a significance level of 0.05, do you have statistically significant evidence that black homicide victims do not have the same distribution of blood types as the donor population? Give the reason for your answer. Remember to state the null and alternative hypotheses