The weight of an organ in adult males has a bell-shaped distribution with a mean of 325 grams and a standard deviation of 20 grams. 1. We graph a histogram of the data. In order to use the Empirical rule to analyze the data, what shape must the histogram have? 2. Use the Empirical rule to determine the percentage of individuals with organs weighs between 285 and 365. % 3. Use the Empirical rule to determine the percentage of individuals with organs weighs between 265 and 345. State your answer to 2 decimal places. % 4. Use the Empirical rule to determine the percentage of individuals with organs weighs higher than 305. % 5. Use the Empirical rule to determine the percentage of individuals with organs weighs lower than 265. % 6. Use the Empirical rule to determine the percentage of individuals with organs weighs more than 3 standard deviations from the mean