Six hundred adult Americans were asked by telephone poll, "What do you think constitutes a middle-class income?"The results are in Table2.71. Also,include left end point,but not the right end point.Salary($)Relative
Six hundred adult Americans were asked by telephone poll, "What do you think constitutes a middle-class income?"The results are in Table2.71. Also,include left end point,but not the right end point.Salary($)Relative frequency<20,0000.0220,000–25,0000.0925,000–30,0000.1930,000–40,0000.2640,000–50,0000.1850,000–75,0000.1775,000–99,9990.02100,000+0.01
a.Whatpercentageofthesurveyanswered"notsure"?b.Whatpercentagethinkthatmiddle-classisfrom$25,000to$50,000?c.Ifyouconstructedahistogramofthedata.(Note:youdonotactuallyhavetomakeahistogram)i.Shouldallbarshavethesamewidth,basedonthedata?Whyorwhynot?ii.Howshouldthe<20,000andthe100,000+intervalsbehandled?Why?d.Findthe40thpercentilee.Findthe80th percentile
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 2 images
