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Secure https://www.mathxl.com/Student/PlayerTest.aspx?testld 15401 3&center; win yes SPRING2017 MATH1680.150 MWF Quiz: CH2 Quiz This Question: 1 pt 12 of 15 (14 complete) The accompanying frequency polygon shows the number of a country's residents below 100 years of age. Complete parts (a) through (g). Click the icon to view the frequency polygon. (a) What is the class width? The class width is about 100 How many classes are represented in the graph? There are classes represented in the graph. (b) What is the midpoint of the second class? Assume the lower and upper class limits are whole numbers The midpoint of the second dass is What are the lower and upper limits of the second class? The lower limit of the second class is The uppekamit ofthe second dass is (c) What is the midpoint of the next to last dass? Assume the lower and upper class limits are whole numbers. The midpoint of the next to last class is What are the lower and upper limits of the next to last class? The lower limit of the next to last class is The upper imit of the next to last class is (d) which age group has the highest populaton? l I. (ru) More Click to select your answer(s)

Explanation / Answer

class width =step differnce in graph =10

number of classes =10

mid point of second class =14.5

lower limit =10; upper limit =19

mid point of lext to last class =84.5

lower and upper klimit of next to last class =80 and 89

age group 30-39 has highest population

population of this age group =47 million

lowest population age group =90-99

estimated population =2 million

total number of residents below 100 =40+42+42+47+40+38+24+16+9+2 =300 million

most exteme b/w 50-59 and 60-69

least extreme b/w 10-19 to 20-29

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