According to the empirical rule. Which of the following statements is correct? a. If a distribution is symmetrical then 99.7% of the observations will be found within 3 standard deviations of the mean b. If a distribution is bimodal 95% of the observations will lie within 2 Variances of the mean c. If a distribution is symmetrical 68% of the observations will lie within 1 Range of the Standard Deviation d. If a distribution is symmetrical then 99.7% of the observations will lie within 3 Variances of the mean e. If a distribution is left skewed then 99.7% of the observations will fall within 3 Standard Deviations of the mean