For the data of Exercise 10.3.11, test at the 0.01 level that the true mean cholesterol levels

Question:

For the data of Exercise 10.3.11, test at the 0.01 level that the true mean cholesterol levels for all races in the United States during 1978–1980 are the same. Also, test at the 0.01 level that the true mean cholesterol levels for all ages in the United States during 1978-1980 are the same.