Chapter 14, Problem 2.5C

Credit card fraud will increase due to the Covid pandemic, experts warn PUBLISHED WED, JAN 27 2021 Payment card fraud losses reached $28.65 billion worldwide in 2019, according to the most recent Nilson Report data. The United States alone is responsible for more than a third of the total global loss, making it the most card fraud-prone country in the world. Julie Conroy, a research director for Aite Group’s fraud and anti-money laundering practice, said, “Our estimate was that at the end of 2020, the U.S. was seeing about $11 billion worth of losses due to credit card fraud.” The coronavirus pandemic is also fuelling explosive growth in card fraud activity. “What happens in every economic downturn is that the attacks start to become more successful,” warned Julie Fergerson, CEO of Merchant Risk Council. “So over the next two to three years, I fully expect credit card fraud numbers to increase in a pretty meaningful way.” Credit card fraud impacts consumers, merchants and issuers…

Use the following information to answer multiple-choice Questions 21 to 30. A fibre glass company is considering the possibility of introducing a new product. Because of the expense involved in developing the initial moulds and acquiring the necessary equipment to produce fibreglass, it has decided to conduct a pilot study to make sure that the market will be adequate. They estimate that the pilot study will cost £12,000. Furthermore, the pilot study can be either successful or unsuccessful. The basic decisions are to build a large manufacturing facility, a small manufacturing facility, or no facility at all. With a favourable market, the company can expect to make £100,000 from the large facility or £60,000 from the smaller facility. If the market is unfavourable, however, they estimate that they would lose £40,000 with a large facility, while they would lose only £30,000 with the small facility. The company estimates that the probability of a favourable market given a successful…

a business owner is planning to strategies his company's growth, he can either buy , rent, or lease a new factory depending on how the business is doing. He was given the following payoff table based on whether the business is doing good or business is slow. Aletnative      Business Doing Goood        Business Slow Buy                              90                                     -10 Rent                            70                                       40 Lease                          60                                       55 The probability of business doing good is 0.7 and the probability of slow business is 0.3. Using Lapace method, the strategy is: A. Do nothing B. Lease C. Rent D. Buy

We want to assess how two different schools have responded in addressing the COVID-19 pandemic. Use the information below to answer the questions that follow. At the start of the week, School A has 500 students and staff. Testing reveals that 55 of them have COVID-19 and 30 are still sick by the end of the week. During the week, 35 students/staff develop new cases of COVID-19 and all are still sick by the end of the week. In addition, 50 healthy students without COVID-19 leave the school in the middle of the week. At the start of the week, School B has 250 students and staff. Testing reveals that 35 of them have COVID-19 and 10 are still sick by the end of the week. In addition, 25 staff members have been vaccinated and are presumed to be immune from COVID-19.  During the week, 10 students/staff develop new cases of COVID-19 and all are still sick by the end of the week. Which school has a greater burden of COVID-19 at the START of the week? Which measure do you use? Incidence or…

Badgers are being monitored to ensure that their population is healthy and growing. Use Microsoft Excel's =TREND and =SLOPE functions and the following data to calculate your answer to the questions: Year 2010 = Population 12900 ; 2011 = 13300 ; 2012 = 19600 ; 2013 = 19200 ; 2014 = 21300 ; 2015 = 23200. a) Given the data above, and assuming a stable environment, what will the population be in the year 2018? (rounded to the nearest whole number, no commas). b) How fast is their population growing per year? (rounded to the nearest whole number, no commas)

A random sample of 10,000 customers was selected over a six month period. The data provides information on their current status with the bank as well as 12 additional attributes describing their demographic and banking information.  what are the key predictors the bank should be aware of with their customers? Examples are included, but not limited to:Are female customers leaving more than males? Is there indication of customer departures associated with specific countries?Is there evidence of salary associated departures? what is an appropiate marketing strategy to attract and retain long term customers

5-41 The following table provides the Dow Jones Industrial Average (DJIA) opening index value on the first working day of 1994–2013. Develop a trend line and use it to predict the opening DJIA index value for years 2014, 2015, and 2016. Find the MSE for this model.

The COVID-19 pandemic dramatically affects the aviation industry, which brings the sharpest decline of passenger demands. It also causes increasing incidents from every aspect of aviation industry, due to the changes of operational environments. The situation will continue to evolve until a “new normal” is reached. Upon your own understanding of the impact of COVID19 on aviation industry, please list five possible safety issues during the pandemic, or in the recovery process, or in the “new normal” period.

Will improving customer service result in higher stock prices for the companies providing the better service? "When a company's satisfaction score has improved over the prior year's results and is above the national average (currently 75.7), studies show its shares have a good chance of outperforming the broad stock market in the long run." The following satisfaction scores of three companies for the 4th quarters of two previous years were obtained from the American Customer Satisfaction Index. Assume that the scores are based on a poll of 52 customers from each company. Because the polling has been done for several years, the standard deviation can be assumed to equal 4 points in each case. Company Year 1 Score Year 2 Score Rite Aid 74 76 Expedia 76 J.C. Penney 76 77 79 a. For Rite Aid, is the increase in the satisfaction score from year 1 to year 2 statistically significant? Use a = .05 and null hypothesis is Hoμ1-2 ≤0. What can you conclude? z value (to 2 decimals) p-value (to 4…