b) The table below shows the number of photocopies made by Kenyatta University students at three locations around campus according to level of study. Please study it and answer the questions that follow. Photocopying location Shopping Center Kiwanja Market Level of study Main Cybercafé 130 First Year 300 190 Second Year 1160 250 150 Third Year 210 210 170 Fourth Year 230 210 240 i) Calculate the percentage of photocopies made by students at each level of study and at each location. ii) Calculate the probability that a randomly chosen photocopying was done by a fourth year student at Kiwanja Market. iii) Given that photocopying was done at the Main Cybercafé, what is the probability that it was done by a first year student?

b) The table below shows the number of photocopies made by Kenyatta University students at three locations around campus according to level of study. Please study it and answer the questions that follow. Photocopying location Shopping Center Kiwanja Market Level of study Main Cybercafé 130 First Year 300 190 Second Year 1160 250 150 Third Year 210 210 170 Fourth Year 230 210 240 i) Calculate the percentage of photocopies made by students at each level of study and at each location. ii) Calculate the probability that a randomly chosen photocopying was done by a fourth year student at Kiwanja Market. iii) Given that photocopying was done at the Main Cybercafé, what is the probability that it was done by a first year student?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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1. The total number of Corona cases in the US, please keep in mind it is a running total. Courtesy of worldometers.info Date in 2020 Feb. 15 Day ( Number of Corona Cases (C) 1 15 Feb. 26 12 68 Mar. 8 23 541 Mar. 19 34 14,896 171,655 517,100 Mar. 30 45 Apr10. Apr. 21 May 2 May 13 May 24 June 4 56 67 835,559 1,170,301 1,443,627 78 89 100 1,704,112 1,942,737 111 June 15 122 2,187,774 June 26 133 July 7 July 18 2,556,718 3,109,759 144 155 3,849,089 July 29 Aug. 9 Aug. 20 Aug. 31 166 4,588,252 177 5,228,738 5,771,205 188 199 6,239,373 Sept. 11 Sept. 22 210 6,673,451 221 7,109,730 a. Let C be the total number of Corona Virus cases in the United States by the end of the r days since Feruary 14, 2020. (Let r = 0 represent Feb. 15, 2020.) Create a scatter plot of the data. Take up the entire piece of graph paper. Make sure to label the axes, and title your graph. Does it look linear? Exponential, Quadratic? c. Use the calculator to find the regression equation for this data. Express the…
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Item 2
The average time that Italy commute to work is 23.15 minutes (Best 4 Tourist Places, June 15, 2020). The average commute times in minutes for 18 cities are given in Table 3.1. Table 3.1 City Time (minutes) Rome 24.9 Milan 26.8 Naples 26.2 Turin 28.1 Palermo 31.7 Genoa 25.8 Bologna 23.3 Florence 32.1 Bari 28.5 Catania 24.4 Verona 29.3 Venice 24.8 Messina 38.1 Padua 28.3 Trieste 28.4 Taranto 24.6 Prato 20.1 Modena 23.4 1) What is the mode for these 18 cities? 2) Find 28th and 77th Percentile of commute times for these 18 cities.
The average time that Italy commute to work is 23.15 minutes (Best 4 Tourist Places, June 15, 2020). The average commute times in minutes for 18 cities are given in Table 3.1. Table 3.1 City Time (minutes) Rome 24.9 Milan 26.8 Naples 26.2 Turin 28.1 Palermo 31.7 Genoa 25.8 Bologna 23.3 Florence 32.1 Bari 28.5 Catania 24.4 Verona 29.3 Venice 24.8 Messina 38.1 Padua 28.3 Trieste 28.4 Taranto 24.6 Prato 20.1 Modena 23.4 a) What is the variance and standard deviation of commute times for these 18 cities? b) Find the z – score value of commute time for these 18 cities. c) Find 28th and 77th Percentile of commute times for these 18 cities.
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The accompanying table shows the results of a survey in which 250 male and 250 female workers ages 25 to 64 were asked if they contribute to a retirement savings plan at work. Complete parts (a) and (b) below. Click the icon to view the survey results. (a) Find the probability that a randomly selected worker contributes to a retirement savings plan at work, given that the worker is male. The probability that a randomly selected worker contributes to a retirement savings plan at work, given that the worker is male, is (Round to three decimal places as needed.) (b) Find the probability that a randomly selected worker is female, given that the worker contributes to a retirement savings plan at work. The probability that a randomly selected worker is female, given that the worker contributes to a retirement savings plan at work, is (Round to three decimal places as needed.)
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Table 1. VITAL STATISTICS OF COUNTRY Y 2020 2018 2015 Total population 109,035,343 100,981,437 92,337,852 Total marriages (Based on civil registration) 240,183 431,972 449,169 Total population of women 15-44 years old 32,962,017 28,625,793 26,417,734 Total Births (Based on civil registration) Male 990,390 750,871 632,870 Female 952,126 972,802 487,798 Total Deaths (Based on civil registration) Timely 506,530 509,762 473,987 Late 106,820 110,382 116,803 Deaths during pregnancy 7,938 7,099 6,759 Fetal deaths Early 1,942 1,236 1,326 Intermediate 1,435 1,161 1,288 Late 1,157 1,311 1,046 Infant deaths Less than 7 days 839 623 795 Less than 28 days 1,961 1,911 1,863 Less than 1 year 3,534 3,658 3,080 Top 3 Leading Causes of Mortality 1. Diseases of the circulatory system 691,225 625,213…
Standardized rates, also known as