Consider a major retailer, such as Wal-Mart or Target. Such companies collect hundreds of thousands of credit card numbers every day to process transactions. In the past few years, hackers have broken into their security systems and stole those numbers, selling them on the black market.Suppose victims of this identity theft sue the retailers for negligence. Based on trial evidence, the judge estimates that:- Additional security measures costing the retailer $10 million a year would prevent any sort of theft in the future;- The likelihood of a major breach without these additional measures is 0.7% with the cost to consumers because of this breach of $1.1 billion ($1,100 million); and- The likelihood of a minor breach without these additional measures is 2.5% with the cost to consumers because of this breach of $0.2 billion ($200 million).Using the Learned Hand Formula, predict how the judge would rule.- In favor of the customers, because BpL.- In favor of the consumers, because B>pL.

Here based on the trial evidences, the judge estimates the following: 1). Additional security…

Answered: Consider a major retailer, such as…

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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Your hospital is negotiating with medical insurance providers, who would like to reduce the amount they pay as reimbursement for hospital stays. For a particular procedure, they would like to reduce payment by $300 and have patients go home one day earlier. To see what effect this would have on hospital costs, a random sample of 50 patients who were recently admitted for this procedure was analyzed. Had they left one day earlier, the average hospital cost would have been $322.44 less, and the standard deviation was found to be $21.71. Construct a 95% confidence interval for the mean net savings for the hospital, per patient, for the larger population of recent patients.
How common are financial cost or contractual constraints associated with smartphone ownership? A survey of smartphone users found that 48% of the 18- to 29-year-olds, 39% of the 30- to 49-year-olds, 24% of the 50- to 64-year-olds, and 19% of those age 65 or older have reached the maximum amount of data they are allowed to use as part of their plan, at least on occasion: Suppose the survey was based on 300 smartphone owners in each of the four age groups: 18 to 29, 30 to 49, 50 to 64, and 65 and older. Complete parts (a) through (c). a. At the 0.05 level of significance, is there evidence of a difference among the age groups in the proportion of smartphone owners who have reached the maximum amount of data they are allowed to use as part of their plan, at least on occasion? Find the test statistic x 2 stat? and critcal value
Consider a service facility with four clerks. Clerk one works at rate 14/hour; Clerk two at rate 18/hour; Clerk three at rate 20/hour; and Clerk four at rate 16/hour. All service times are independent and exponential. If when you arrive there is already one person waiting, what is your expected waiting time?
How common are financial cost or contractual constraints associated with smartphone ownership? A survey of smartphone users found that 49% of the 18- to 29-year-olds, 40% of the 30- to 49-year-olds, 25% of the 50- to 64-year-olds, and 19% of those age 65 or older have reached the maximum amount of data they are allowed to use as part of their plan, at least on occasion: Suppose the survey was based on 200 smartphone owners in each of the four age groups: 18 to 29, 30 to 49, 50 to 64, and 65 and older What is the p-value?
Q6 AC, Ltd., a supplier of operating system software for personal computers, was planning the initial public offering of its stock in order to raise sufficient working capital to finance the development of a radically new, seventh-generation integrated system. With current earnings of $1.61 a share, AC and its underwriters were contemplating an offering price of $21, or about 13 times earnings. In order to check the appropriateness of this price, they randomly chose seven publicly traded software firms and found that their average price/earnings ratio 13 , and the sample standard deviation was 1.57 . At a = 0.02, can AC conclude that the stocks was of publicly traded software firms have an average P/E ratio that is significantly different from 14.35 ? What are the confidence limits of acceptance region?
How common are financial cost or contractual constraints associated with smartphone ownership? A survey of smartphone users found that 49% of the 18- to 29-year-olds, 40% of the 30- to 49-year-olds, 25% of the 50- to 64-year-olds, and 19% of those age 65 or older have reached the maximum amount of data they are allowed to use as part of their plan, at least on occasion: Suppose the survey was based on 200 smartphone owners in each of the four age groups: 18 to 29, 30 to 49, 50 to 64, and 65 and older The test statistic is χ2STAT = ? (Round to three decimial places)
The following information was taken from the financial records of Sodigaz, Inc. Year 2 Year 1 Sales $285,000 $278,500 Accounts receivable: Beginning of year 29,600 18,900 End of year 41,000 29,600 The number of days' sales in receivable for Year 2 is a. 31.8 b. 38.8 c. 24.8 d. 45.2
You may need to use the appropriate appendix table or technology to answer this question. Individuals filing federal income tax returns prior to March 31 received an average refund of $1,059. Consider the population of "last-minute" filers who mail their tax return during the last five days of the income tax period (typically April 10 to April 15). (a) A researcher suggests that a reason individuals wait until the last five days is that on average these individuals receive lower refunds than do early filers. Develop appropriate hypotheses such that rejection of H0 will support the researcher's contention. A) H0: ?= $1,059 Ha: ? ≠ $1,059 B) H0: ?< $1,059 Ha: ?≥ $1,059 C) H0: ? ≥ $1,059 Ha: ? < $1,059 D) H0: ?> $1,059 Ha: ? ≤ $1,059 E) H0: ?≤ $1,059 Ha: ? > $1,059 (b) For a sample of 400 individuals who filed a tax return between April 10 and 15, the sample mean refund was $910. Based on prior experience, a population standard deviation of ? = $1,600may be…
The department of code enforcement of a country government issues permits to general contractors to work on residential projects. For each permit issued, the department inspects the result of the project and gives a "pass" or "fail" rating. A failed project must be re-inspected until it receives a pass rating. The department had been frustrated by the high cost of re-inspection rate and decided to publish the inspection records of all contractors on the web. It was hoped that public access to the records would lower the re-inspection rate. A year after the web access was made public, two samples of records were randomly selected. One sample was selected from the pool of records before web publication and one after. The proportion of projects that passed on the first inspected was noted for each sample. The results are summarized below. No Public Web Access nį = 500, ĝ1 = 0.67 Public Web Access n2 = 100, p2 = 0.80 A test, at a 0.10 level of significance, is to be conducted as to whether…

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