c. [1 pts] What percentage of presidents' ages fall within one standard deviation of the mean? [Round to 1 decimal place.) (Grade breakdown: .5 for work/ set up ; .25 for correct answer; .25 for reasoning) Replace the italicized words with your image of the solution, answer and explanation. (for question 20 only) 2. Use the following data obtained from ages of the last six U. S. Presidents at the time of their inauguration to answer the following questions: Ages of Last 6 Presidents at Inauguration George Bush 64 Bill Clinton 46 George W. Bush 54 Barack Obama 47 Donald Trump 70 Joe Biden 78