Chapter 14, Problem 14.45CYU

Many research studies have been conducted to examine how different organizations are on implementing knowledge management processes. For example, studies have proved that larger firms have more resources to utilize, and so they have taken more efforts to implement knowledge management processes. The Journal of Business Research (Aug. 2014) published a study discussing the relationship between knowledge management processes and organizational performance. The table below shows the percentage of different size of firms participated in the study. These firms have been classified in terms of number of employees working. Need step-by-step procedure to answer each question. Randomly select one of the participated company from this study. Let x be the number of employees working in the company. Write the probability distribution of this x. What is the probability that the selected company employs more than 50 employees? Find E(x) and σ. Interpret the result.

The Internet is rapidly becoming an essential source of information about health, nutrition, finances, and current events. Neunschwander, Abbott, and Mobley (2012) were interested in inequality of access to the Internet as a function of the characteristics of the participant. They recruited a very large sample of participants from the Indiana Supplemental Nutrition Assistance Program and surveyed them about their access to the technology. They observed that racial minorities, older persons, and persons with lower educational attainment were less likely to have a functioning computer at home and, relatedly, were less likely to have access to the Internet. Below are frequencies similar to those observed by the researchers.     Owns a Computer Does Not Own a Computer Age: 18-30 378 336 Age: 71 and Older 23 127 Does the proportion of participants who own a computer differ significantly from group to group? Test with alpha = .05.   Compute Cramer’s V to measure…

As part of the end-of-semester review of the marks obtained by third-year students in business statistics, the academic manager of Frontier Business School has captured the marks obtained by 10 randomly selected third-year students in their formative and summative assessments as shown below in Table.The academic manager wants to determine whether students’ performance (i.e., marks) in the formative assessment is a reliable predictor of students’ performance (i.e., marks) in the summative assessment. The relationship between the independent variable (IV) and the dependent variable (DV) is likely to be mediated by athird variable (MV). With regard to the statement above, which of the following is most likely to be correct?A IV = Students’ performance (i.e., marks) in the formative assessment; DV = Students’ performance (i.e., marks) inthe summative assessment, and MV = Students’ level of comfort with the venue of the assessments.B IV = Students’ performance (i.e., marks) in the summative…

An industrial/organizational psychologist wants to improve worker productivity for a client firm, but fırst he needs to gain a better understanding of the life of the typical white-collar professional. Fortunately, he has access to the 2008 Workplace Productivity Survey, commissioned by LexisNexis and prepared by WorldOne Research, which surveyed a sample of 650 white-collar professionals (250 legal professionals and 400 other professionals). One of the survey questions was, "During the average workday, how many hours do you spend attending meetings?" For the subsample of legal professionals (n = 250), the mean response was M = 2.0 hours, with a sample standard deviation of s = 5.1 hours. The estimated standard error is SM = 0.323. The psychologist can be 99% confident that the interval from 1.2 to includes the unknown population mean pu.

A study investigated the relationship between audit delay and variables that describe the client and the auditor. The file Audit contains data from a sample of 40 companies on the following set of variables: Delay: The length of time from a company's fiscal year-end to the date of the auditor's report. Industry: A dummy variable coded 1 if the firm was an industrial company or 0 if the firm was a bank, savings and loan, or insurance company. Public: A dummy variable coded 1 if the company was traded on an organized exchange or over the counter; otherwise coded 0. Quality: A measure of overall quality of internal controls, as judged by the auditor, on a five-point scale ranging from "virtually none" (1) to "excellent" (5). Finished: A measure ranging from 1 to 4, as judged by the auditor, where 1 indicates "all work performed subsequent to year-end" and indicates 4 "most work performed prior to year-end." Click on the datafile logo to reference the data. Consider a model in which…

The Simple Solution to Traffic A study in 2017 showed that Metro Manila has the 3rd worst traffic among its Southeast Asian neighbors. Government authorities are receiving several complaints from commuters due to the worst transport connectivity and endless queueing and congestions among rail transit stations. In this regard, aligning projects for the improvement of the traffic system as part of the "Metro Manila Dream (MMD) Plan" was set into motion. However, media reports claimed that many commuters did not feel any improvement in the current traffic situation in the Metro, especially in Epifanio Delos Santos Avenue (EDSA). The chair of the Metro Manila Development Authority (MMDA) is keen to verify if the road traffic conditions are fairly improving in EDSA despite various media reports. In the past, the recorded vehicular traffic speed in EDSA shows about 15 kph, on the average. To do this, the MMDA deployed speed measuring radars in which the traffic speeds of 200 randomly sampled…

The hospital readmission rate is often considered an indicator of an undesirable patient outcome. Youquality improvement team is located at a metropolitan hospital that serves a large population. The quality improvement team is conducting a study pertaining to readmissions, smoking and number of drugs administered to admitted patients with congestive heart failure (CHF). The team is interested in reducing the number of readmissions among patients discharged with a principal diagnosis of CHF.  The team believes that the high admission rate is due to the difficulty that these patients have in controlling the number of drugs that they typically take. The team believes that by improving patient/family education regarding drug administration, the readmission rate could be reduced. Thus, they have developed the screen “CHF patients taking three or more drugs” to identify these patients before discharge. To evaluate the effectiveness of the measure, the team conducts a study on all CHF…

Listed below are the costs (in dollars) of flights from Bew York (JFK) to San Franciscofor US Air, Continenta, Delta, United, American, Alaska Airlines and Northwest. Usea 0.01 significance level to test the claim that flights scheduled one day in advance costmore than flights scheduled 30 days in advance. What strategy appears to be effectivein saving money when flying?

Monitoring quality of power equipment. Mechanical Engineering (Feb. 2005) reported on the need for wireless networks to monitor the quality of industrial equipment. Forexample, consider Eaton Corp., a company that developsdistribution products. Eaton estimates that 90% of theelectrical switching devices it sells can monitor the qualityof the power running through the device. Eaton further estimates that of the buyers of electrical switching devicescapable of monitoring quality, 90% do not wire the equipment up for that purpose. Use this information to estimatethe probability that an Eaton electrical switching device iscapable of monitoring power quality and is wired up forthat purpose.