3.67 The financial services call center in Problem 3.66 also moni-tors call duration, which is the amount of time spent speaking to cus-tomers on the phone. The file CallDuration contains the followingdata for time, in seconds, spent by agents talking to 50 customers:243 290 199 240 125 151 158 66 350 1141 251 385 239139 181 111 136 250 313 154 78 264 123 314 135 99420 112 239 208 65 133 213 229 154 377 69 170 261230 273 288 180 296 235 243 167 227 384 331a. Compute the mean, median, range, and standard deviation forthe call duration, which is the amount of time spent speaking to customers on the phone. Interpret these measures of centraltendency and variability.b. List the five-number summary.c. Construct a boxplot and describe its shape.d. What can you conclude about call center performance if a callduration target of less than 240 seconds is set?

Answered: Image /qna-images/answer/591daea9-eb60-4944-94bb-60734a0cc99a.jpg

Answered: 3.67 The financial services call center…

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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Problems 1. From early 1980's through 2000, states kept records of the number of bald eagle breeding pairs. Here is a bar graph showing the approximate number of pairs of breeding eagles from 1986 to 2000. Eagle Breeding Pairs 7000 6423 5763 6000 5103 5000 4443 3783 4000 3123 ll 3000 2463 1803 2000 1000 1986 1988 1990 1992 1994 1996 1998 2000 2 (a) Use the data in the bar graph to complete the table. In the table, let t represent the number of years after 1986, and let P(t) be the number of breeding pairs of eagles. t 4 10 14 P(t) 1803 3123 5103 6423 (b) Decide whether the number of breeding pairs seems to be growing linearly. Write your conclusion in a complete sentence. (c) Find the growth rate. Express your answer using correct units. (d) Find a formula for the function P(t) expressing the number of breeding pairs of eagles in terms of t, the number of years after 1986. (e) In 2006, the year before bald eagles were removed from the Endangered Species List, the number of breeding…
C8. According to the Pew Research Center (2015), recent immigrants are better educated than earlier immigrants to the United States. The change was attributed to the availability of better education in each region or country of origin. The percentage of immigrants 25 years of age and older who completed at least high school is reported in this table for 1970 to 2013. Write a statement describing the change over time in the percentage who completed at least a high school degree. 1970 1980 1990 2000 2013 Mexico 14 17 26 30 48 Other Central/South America 57 53 60 66 Asia 75 72 75 82 84 48 68 81 87 95 Europe 36 48 52 58 72 Caribbean 81 91 88 85 85 Africa Source: Pew Research Center, Modern Immigration Wave Brings 59 Million to U.S., Driving Population Growth and Change Through 2065, 2015. Retrieved from https://www.pewresearch.org/hispanic/2015/09/28/modern- immigration-wave-brings-59-million-to-u-s-driving-population-growth-and-change-through-2065/ 52
Case 17.1 Pointsec Mobile Technologies When salespeople, construction supervisors, managers, and other employees are away from the workplace, many of them carry mobile devices such as laptop computers and PDAs, often containing valuable, private data related to their jobs. Pointsec (http://www.checkpoint. com/pointsec) provides security systems to protect such data. To bring home the vulnerability of mobile devices, Pointsec decided to share information about the number of such devices left behind in taxis.8 The research involved conducting a survey of taxi drivers. Staff members at Pointsec’s public relations firm called major taxi companies in nine cities in Australia, Denmark, Finland, France, Germany, Norway, Sweden, Great Britain, and the United States. Each of the cooperating companies put these interviewers in touch with about one hundred drivers. Drivers were asked how many devices of each type—cell phones, PDAs, computers, and so on—had been left in their cab over the…
The following data represent the monthly phone use, in minutes, of a customer enrolled in a fraud prevention program for the past 20 months. The phone company decides to use the upper fence as the cutoff point for the number of minutes at which the customer should be contacted. What is the cutoff point? The cutoff point is minutes. (Round to the nearest minute.)
The monthly cost for health care for an employee and two dependents in a certain year is given in the following table. Provider Cost Provider Cost Maxicare $415.31 Kaiser $4337 Cigna $424.74 Aetna $436.26 Health Net $427.29 Blue Shield $442.25 Pacific Care $428.06 Omni Healthcare $457.90 Redwoods Plan $431.53 Lifeguard $457.64 Draw a box plot for the monthly costs of health care (ranked from lowest to highest). 0415 420 425 430 435 440 0425 430 435 440 445 450 455 420 430 440 450 420 430 440 450
Ralph Lauren Corporation (RL) designs, markets, and distributes a variety of apparel, home décor, accessory, and fragrance products. The company’s products include such brands as Ralph Lauren, Polo by Ralph Lauren, and Chaps. For two recent years, the company reported the following (in millions): Year 2 Year 1 Sales $7,230 $7,451 Accounts receivable (end of year) 517 655 The accounts receivable at the beginning of Year 1 was $588 million. a. Compute the accounts receivable turnover for Year 1 and Year 2. Round to one decimal place. Year 1 Year 2 Accounts Receivable Turnover fill in the blank 1 fill in the blank 2 b. Compute the number of days’ sales in receivables for Year 1 and Year 2. Use 365 days and round all calculations to one decimal place. Year 1 Year 2 Number of Days’ Sales in Receivables fill in the blank 3 days fill in the blank 4 days
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1. A sales manager would like to see his sales representative’s unit sales per month. The secretary was told to keep a monthly record of the sales. The following are the data from the previous months (in ascending order): 5, 6, 8, 10, 10, 14, 15, 16, 16, 17, 17, 18, 19, 21, 21, 23, 26, 27, 28, 28, 28, 30, 38, 43. Compute for the median and mode. What is the range for the monthly sales?
The following data represent the monthly phone use, in minutes, of a customor onrolled in a fraud prevention program for the past 20 months. The phone company decides to use the upper fence as the cutoff point for the number of minutes at which the customer should be contacted. What is the cutoff point? 530 496 331 467 548 346 511 377 411 415 360 339 363 372 343 477 474 333 610 441 The cutoff point isminutes. (Round to the nearest minute)

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