/courses/26466/quizzes/150972/take8Question 21 ptsTransit Railroads is interested in the relationship between travel distance and the ticket classpurchased. A random sample of 200 passengers is taken. The table shows the results. The railroadwants to know if a passenger's choice in ticket class is independent of the distance they must travel.TITITHTraveling Distance1-100 milesThird ClassSecond ClassFirst ClassTotal21146.41101-200 miles18168.42201-300 miles1617154847301-400 miles401-500 milesTotal12142161022736760200How many passengers are expected to travel between 201 and 300 miles and purchase second-classtickets? Round to the nearest whole number.Question 31 pts ec x0101|C目/courses/26466/quizzes/150972/takeQuestion 31 ptsTransit Railroads is interested in the relationship between travel distance and the ticket classpurchased. A random sample of 200 passengers is taken. The table shows the results. The railroadwants to know if a passenger's choice in ticket class is independent of the distance they must travel.Traveling Distance1-100 milesThird ClassSecond ClassFirst ClassTotal21146.41101-200 miles181642201-300 miles301-400 miles401-500 miles16171548121421479.1022Total736760200How many passengers are expected to travel between 401 and 500 miles and purchase first-classtickets? Round to the nearest whole number.Question 41 ptsTransit Railroads is interested in the relationship between travel distance and the ticket class

A. E[17]= (48*67)/200 = 16.08 = 16 answer 48 passengers travel…

Question 3 1 pts Transit Railroads is interested in the relationship between travel distance and the ticket class purchased. A random sample of 200 passengers is taken. The table shows the results. The railroad wants to know if a passenger's choice in ticket class is independent of the distance they must travel. Traveling Distance Third Class Second Class First Class Total 1-100 miles 101-200 miles 21 14 6. 41 18 16 8. 42 201-300 miles 16 17 15 48 47 301-400 miles 401-500 miles 12 14 21 10 22 Total 73 67 60 200 How many passengers are expected to travel between 401 and 500 miles and purchase first-class tickets? Round to the nearest whole number. Question 4 1 pts Transit Railroads is interested in the relationship between travel distance and the ticket class

Question 3 1 pts Transit Railroads is interested in the relationship between travel distance and the ticket class purchased. A random sample of 200 passengers is taken. The table shows the results. The railroad wants to know if a passenger's choice in ticket class is independent of the distance they must travel. Traveling Distance Third Class Second Class First Class Total 1-100 miles 101-200 miles 21 14 6. 41 18 16 8. 42 201-300 miles 16 17 15 48 47 301-400 miles 401-500 miles 12 14 21 10 22 Total 73 67 60 200 How many passengers are expected to travel between 401 and 500 miles and purchase first-class tickets? Round to the nearest whole number. Question 4 1 pts Transit Railroads is interested in the relationship between travel distance and the ticket class

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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3. Can SAT scores predict college performance? Let x be a variable that represents SAT score of a computer science major, and let y be a variable that represents a student’s GPA upon graduation. A random sample of n =15 computer science majors provided their SAT scores and GPAs: x 1232 1070 1086 1287 1130 1048 1121 1095 1135 1208 1333 1160 1186 1243 1261 y 3.52 2.91 2.4 3.47 3.47 2.37 2.4 2.24 3.02 3.32 3.59 2.54 3.19 3.71 3.58 The scatter diagram for the SAT score and GPA is given below: (a) Find the sample correlation coefficient r. Truncate to two decimal places. What does the value tell you about the data? (b) Find the equation of the least squares line . Truncate to four decimal places. What does the slope mean? (c) Find the value of the coefficient of determination . Truncate to two decimal places. What does this number mean? (d) What is the predicted GPA if a computer science major got a…
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A television station wishes to study the relationship between viewership of its 11 p.m. news program and viewer age (18 years or less, 19 to 35, 36 to 54, 55 or older). A sample of 250 television viewers in each age group is randomly selected, and the number who watch the station’s 11 p.m. news is found for each sample. The results are given in the table below. Age Group Watch11 p.m. News? 18 or less 19 to 35 36 to 54 55 or Older Total Yes 37 46 59 83 225 No 213 204 191 167 775 Total 250 250 250 250 1,000 (a) Let p1, p2, p3, and p4 be the proportions of all viewers in each age group who watch the station’s 11 p.m. news. If these proportions are equal, then whether a viewer watches the station’s 11 p.m. news is independent of the viewer’s age group. Therefore, we can test the null hypothesis H0 that p1, p2, p3, and p4 are equal by carrying out a chi-square test for independence. Perform this test by setting α = .05. (Round your answer to 3 decimal places.)…
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Moving to another question will save this response. Question 5 Obtain the five-number summary for the given data. The test scores of 15 students are listed below. 42 45 50 53 57 61 67 68 75 76 85 87 90 94 95 O 42, 53, 71.5, 87, 95 42, 52.25, 71.5, 85.5, 95 O 42, 53, 68, 87, 95 O 42, 52.25, 68, 85.5, 95 A Moving to another question will save this response. earch F2 DII F3 F4 F5 PrtS 5 W