NR B

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please dont try if you cant answer with proper explanation of each point

i will not condsider if even one point is missing.

Consider an outbreak of shigeilosis in which 18 persons in 18 different households all became ill. If the population of the community was 1,000. One incubation period later, 17 persons in the same households as these "primary" cases developed shigellosis. If the 18 households included 88 persons, the overall attack rate and secondary attack rate are Overall [primary] attack rate is 25% and secondary attack rate is 18% Overall [primary] attack rate is 18% and secondary attack rate is 28% Overall (primary) attack rate is 20% and secondary attack rate is 25% Overall [primary] attack rate is 18% and secondary attack rate is 28% O O O O 0 Overall [primary] attack rate is 18% and secondary attack rate is 25% Exercise1 (30 points) Referring to Data in Assessment R excel file: Calculate the mean, median, mode, 35th, Q1, Q2, Q3, range, interquartile range, variance, standard deviation, coefficient of variation, by calling the necessary excel functions for the "Completion time" and "Shipments". Write your answers in the specified cells of the Data sheet. (20 points) Screenshot Use the Data Analysis Tool Kit to construct the descriptive statistics table for each variable. (10 points)A B C D E F G H Shipments and Completion Time W N - Date: June 2003 Day Completion time (hours) | Shipments Completion time (hours) |Shipments 1 1.9 108 Mean 2 7.4 644 Median 3 6.3 298 Mode 4 1.5 35th percentile 10 5 3 223 Q1 12.3 748 Q2 4.5 309 Q3 13 9.3 446 Q4 5.6 109 Range 10 10.4 506 IQR 16 3.7 112 VAR 17 12 5.6 383 Standard Deviation 18 13 10.4 673 Coefficient of Variation 19 14.1 897 20 11.5 26 21 16 6.7 260 22 17 6.3 286 23 18 9.3 718 24 19 3.7 216 25 20 4.5 167 26 21 10 748 27 22 15.3 1075 28 23 1.1 71 29 24 12.6 867 30 25 8.6 699 31 26 10.8 707 32 27 6.7 223 33 28 9.3 629 34 29 7.8 554 35 30 84 671 36 37 38 39 401. Sara, Miles, and Jhani are organizing the school dance for their high school. a) Before the dance, each person is needed for a different job: booking the entertainment, ordering the refreshments, and decorating the gym. In how many different ways can they be chosen for these jobs? (3 marks) Hint: See Question 1 on page 110 of your text. The answers to textbook questions are at the back of the text b) List all the ways they can be assigned the jobs in part a). (6 marks) c) After the dance, Sara, Miles, and Jhani are needed to clean the gym. In how many ways can they be chosen for this job? (2 marks) d) In the situations above, which involved permutations and which involved combinations? Explain how you know