Method School Car Bus Other TOTAL Middle School 18% 14% 38% 12% 8% 10% 42% High School 58% TOTAL 56% 26% 18% 100%
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Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
what would be a careful interpretation of the 12% in the two-way table?
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- The annual revenue of Amazon is given in the table below (sourceLinks to an external site.). Year Amazon Annual Revenue(Billions of US dollars) 2020 386.064 2019 280.522 2018 232.887 2017 177.866 2016 135.987 2015 107.006 2014 88.988 2013 74.452 2012 61.093 2011 48.077 2010 34.204 In what year will the estimated revenue of Amazon be 1,357 billion US dollars? Note: I am asking for the year, not the number of years since 2010. This may happen between two years. Round to the nearest year.The owners of an amusement park count the number of adults and children who attend the park on a Friday and Saturday. The completed table is shown below. Friday Saturday Total Adults 245 371 616 Children 154 277 431 Total 399 648 1,047 How does the joint frequency for the number of adults who attended the amusement park on Friday compare to the joint frequency for the number of children who attended the amusement park on Saturday? The joint frequency for the number of adults who attended the amusement park on Friday is 399, which is less than the joint frequency for the number of children who attended the amusement park on Saturday, 431. The joint frequency for the number of adults who attended the amusement park on Friday is 154, which is less than the joint frequency for the number of children who attended the amusement park on Saturday, 277. The joint frequency for the number of adults who attended the amusement park on Friday is 371, which is…The director of library services at a college did a survey of types of books (by subject) in the circulation library. Then she used library records to take a random sample of 888 books checked out last term and classified the books in the sample by subject. The results are shown below. Subject Area Percent of Books on Subject in CirculationLibrary on This Subject Number of Books inSample on This Subject Business 32% 247 Humanities 25% 209 Natural Science 20% 222 Social Science 15% 127 All other subjects 8% 83 Using a 5% level of significance, test the claim that the subject distribution of books in the library fits the distribution of books checked out by students. (a) What is the level of significance?State the null and alternate hypotheses. H0: The distributions are the same.H1: The distributions are different.H0: The distributions are different.H1: The distributions are different. H0: The distributions are the same.H1: The distributions are the same.H0: The…
- The director of library services at a college did a survey of types of books (by subject) in the circulation library. Then she used library records to take a random sample of 888 books checked out last term and classified the books in the sample by subject. The results are shown below. Subject Area Percent of Books on Subject in CirculationLibrary on This Subject Number of Books inSample on This Subject Business 32% 299 Humanities 25% 208 Natural Science 20% 216 Social Science 15% 100 All other subjects 8% 65 Using a 5% level of significance, test the claim that the subject distribution of books in the library fits the distribution of books checked out by students. (a) What is the level of significance?State the null and alternate hypotheses. H0: The distributions are the same.H1: The distributions are the same.H0: The distributions are different.H1: The distributions are different. H0: The distributions are the same.H1: The distributions are different.H0: The…part(h)Part h
- City Population "Fire/EMS spending per resident" "Fire/EMS personnel per 1000 residents" # of fire personnel Boston 608,352 $452.15 3.4 2068 San Francisco 799,183 $315.81 2.2 1758 Columbus, OH 747,755 $255.70 2.1 1570 Seattle 594,210 $247.75 1.8 1070 Baltimore 637,455 $225.98 2.7 1721 Memphis 674,028 $220.22 2.5 1685 Detroit 916,952 $201.54 1.6 1467 Nashville 590,807 $194.43 1.9 1123 Philadelphia 1,449,634 $187.63 1.6 2319 Jacksonville 805,605 $179.99 1.5 1208 New York 8,274,527 $157.56 1.7 14067 Los Angeles 3,834,340 $137.80 0.9 3451 fire/EMS spending per person a) what is the mean amount spent for Fire/EMS services per person in these 12 cities? b) estimate the median amount spent for fire/ems services per person in these 12 cities. c) estimate the mode amount spent for fire/ems services per person in these 12 cities.City Population "Fire/EMS spending per resident" "Fire/EMS personnel per 1000 residents" # of fire personnel Boston 608,352 $452.15 3.4 2068 San Francisco 799,183 $315.81 2.2 1758 Columbus, OH 747,755 $255.70 2.1 1570 Seattle 594,210 $247.75 1.8 1070 Baltimore 637,455 $225.98 2.7 1721 Memphis 674,028 $220.22 2.5 1685 Detroit 916,952 $201.54 1.6 1467 Nashville 590,807 $194.43 1.9 1123 Philadelphia 1,449,634 $187.63 1.6 2319 Jacksonville 805,605 $179.99 1.5 1208 New York 8,274,527 $157.56 1.7 14067 Los Angeles 3,834,340 $137.80 0.9 3451 a) what is the mean population of the twelve cities for which data are presented? b) what is the median population of the 12 cities for which data are presented? e) what percent of the U.S. population lives in these 12 cities?City Population "Fire/EMS spending per resident" "Fire/EMS personnel per 1000 residents" # of fire personnel Boston 608,352 $452.15 3.4 2068 San Francisco 799,183 $315.81 2.2 1758 Columbus, OH 747,755 $255.70 2.1 1570 Seattle 594,210 $247.75 1.8 1070 Baltimore 637,455 $225.98 2.7 1721 Memphis 674,028 $220.22 2.5 1685 Detroit 916,952 $201.54 1.6 1467 Nashville 590,807 $194.43 1.9 1123 Philadelphia 1,449,634 $187.63 1.6 2319 Jacksonville 805,605 $179.99 1.5 1208 New York 8,274,527 $157.56 1.7 14067 Los Angeles 3,834,340 $137.80 0.9 3451 calculate the average mean earnings of fire/ems personnel in each of the 12 cities.
- Show step-by-step Show step-by- step The director of library services at a college did a survey of types of books (by subject) in the circulation library. Then she used library records to take a random sample of 888 books checked out last term and classified the books in the sample by subject. The results are shown below. Subject Area Percent of Books on Subject in CirculationLibrary on This Subject Number of Books inSample on This Subject Business 32% 237 Humanities 25% 220 Natural Science 20% 223 Social Science 15% 128 All other subjects 8% 80 Using a 5% level of significance, test the claim that the subject distribution of books in the library fits the distribution of books checked out by students. (a) What is the level of significance?State the null and alternate hypotheses. H0: The distributions are the same.H1: The distributions are different.H0: The distributions are the same.H1: The distributions are the same. H0: The distributions are different.H1: The distributions are different.H0: The…