65 69 73 77 81 85 89 Test Scores Q Use the Empirical Rule to answer the following questions. a. The mean is b. The standard deviation is C. % of the test scores are between 73 and 81. d. % of the test scores are between 69 and 85. e. % of the test scores are between 65 and 89. % of the test scores are between 77 and 81. g % of the test scores are less than 77. h. % of the test scores are less than 81