MATH 137 EXAM II REVIEW MATERIALS THESE ARE JUST SAMPLE QUESTIONS FROM EACH OBJE

Question

MATH 137 EXAM II REVIEW MATERIALS THESE ARE JUST SAMPLE QUESTIONS FROM EACH OBJECTIVE REVIEW ALL YOUR HOMEWORK AND QUIZ PROBLEMS AS WELL 1) CHAPTER 3 PROBLEMS Identify whether the variable is a categorical or numerical a) The distance in miles a student drives to college numerical iab e b) A person's favorite flavor of ice creamcateauni cal aa he ) Adults were surveyed about how often they are late to work. Their responses are summarized in the relative frequency bar graph below. How Often a Worker Is Late to Work 0.50 0.40 0.30 0.11 0.1 004 0056 0.05 ) Find the proportion of those surveyed who say they are late to work every day. Find the proportion of those surveyed who say they are NOT late to work every day. Find the proportion of those surveyed who say they are late to work less than once a month OR never. Find the proportion of those surveyed who say they are late to work at least once a week. ) ) e following data are the genres of the top 20 U.S. music singles during the week of December 14, 2014 Pop Alternative Po Pop Pop Pop Country Hip-hop SoulPop Pop Rap Country struct a frequency and a relative frequency table. struct a frequency bar graph. truct a relative frequency bar graph. re NOT country? nr a

Explanation / Answer

a) Proportion of those surveyed who say they are late to work every day = 0.05

b) Proportion of those surveyed who say they are NOT late to work every day = 1-0.05 = 0.95

c) Proportion of those surveyed who say they are late to work less than once a month OR never = 0.21+0.47 = 0.68

d) Proportion of those surveyed who say they are late to work atleast once a week = 0.05+0.11+0.04 = 0.20

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