Use either the Empirical Rule or Chebyshev's Theorem to answer the following : use the appropriate Rule or theorem. DO NOT USE THE Z TABLE ! For the sample with a mean of 500 and standard deviation of 15 and it is NOT known if the scores are normally distributed . Find the percentages for the scores between 455 and 545 Select one : O a 34.5 % O b . 68 % . 75 % O d . 95 % e . 88.89 % O f . Cannot be determined