3.20. National Geographic Traveler magazine recently presented data on the annual number of vacation days averaged by residents of eight different countries. They reported 42 days for Italy. 37 for France, 35 for Germany, 34 for Brazil, 28 for Britain, 26 for Canada, 25 for Japan, and 13 for the United States. (The number of days mandated by these governments differs, varying between 0 for the United States and 30 for France.) (a) Find the mean and standard deviation. Interpret mean- 30 Standard deviation (b) Report the five-number summary. (Hint: You can find the lower quartile by finding the median of the four values below the median!)