Please answer all questions and show all steps

4. Here are the commutes (in kilometres) for a group of six employees. Find the standard deviation. Show your work. 36.9 17.9 43.1 72.6 22.7 21.4 A) 421.6 B) 214.6 C) 72.6 D) 20.5 E) 98.9 5. The City of Windsor Department of Parks and Recreation is planning to build a recreation centre in one of the city's parks. They conducted a poll to find out the types of physical activities the local population would be interested in. The poll was based on telephone responses from 1013 randomly selected adults. The table shows the percentages of people who expressed interest in various activities. Activity Percent Running/Walking 56 Weight Training 48 Biking 33 Aerobics 25 Swimming 13 Create a bar chart for these data. 6. Here are the prices for 8 different CD players. Find the standard deviation. $332 $130 $392 $275 $399 $205 $290 $176 A) $98.75 B) $604,450.13 C) $287.50 D) $672,715.00 E) $399