For #3-9: The mean weight of adult American men is 180 pounds with standard deviation of 25 pounds. The weights are approximately normally distributed. Use the 68%-95%-99.7% Rule to approximate each of the following. 3. Using the values given above, label the normal curve at the right with the numerical values for u, to, t 20 and 30. 4. What percent of all adult American men have a weight less than 130 pounds? 5. What percent of all adult American men have a weight between 130 and 205 pounds? 6. What percent of all adult American men have a weight less than 230 pounds? 7. What percent of all adult American men have a weight less than 105 pounds? 8. The heaviest 16% of all men in weight weigh more than how many pounds? 9. What weight separates the lowest 2.5% of all American men in weight from the remaining weights?