failure. Additionally‚ creating a healthy organizational culture also has a strong impact on the success of a company. Challenges not only bring difficulties for management to face‚ but also bring rewards. So manager ’s efforts can be rewarded in most cases as long as manager is willing to do whatever is necessary to achieve success. Manager needs some essential skills to carry out duties and issues. Robert L. Katz (1993) has identified three basic skills for manager to possess and how these skills
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Chapters 1-3:In order to control costs‚ a company wishes to study the amount of money its sales force spends entertaining clients. The following is a random sample of six entertainment expenses (dinner costs for four people) from expense reports submitted by members of the sales force. $157‚ $132‚ $109‚ $145‚ $125‚ $139. Calculate the mean and sample variance(s^2) and standard deviation. Mean = 807/6 = 134.5. Sample Variance = (109925 – (807^2/6)/6-1 = (109925 – 108541)/5 = 1384/5 = 276.8.
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Q1 In a test given to 500 students‚ the average marks was 56 and the standard deviation was 20. Find (i) the number of students exceeding a score of 60. (ii) the number of students having marks between 50 and 70. (iii) the value of marks exceeded by the top 100 students. Answer-------- (i) number of students exceeding a score of 60=210 (ii) The number of students having marks between 50 and 70=188 (iii) The value of marks exceeded by the top 100 students=73 Q2. Following
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for each observation. These are found by subtracting the mean value from the selected value and dividing by the standard deviation. The Normal Probability Distribution Find an example of application of probability theory in your workplace or business. Show that the reasons that your workplace uses probability analysis‚ such as probability of risk calculations or percent defects or percent for pass or fail of a
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Interval Problem Answers AP Statistics Quiz A – Chapter – Key A statistics professor asked her students whether or not they were registered to vote. In a sample of 50 of her students (randomly sampled from her 700 students)‚ 35 said they were registered to vote. 1. Find a 95% confidence interval for the true proportion of the professor’s students who were registered to vote. (Make sure to check any necessary conditions and to state a conclusion in the context of the problem.) We have
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Final Examination Name: Course: Date: Final Examination in Statistics (M.A.Ed./M.A.N.) 1.The scores of 15 masteral students in Statistics were 80‚85‚78‚90‚91‚98‚95‚98‚95‚74‚71‚72‚98‚99‚and 87. Find the measures of central tendency‚ the range‚ the variance‚ and the standard deviation. 2. In the performance evaluation of teachers‚ if the dean’s evaluation is given a weight of 5‚ self-evaluation is 2‚ peer’s evaluation is 2‚ and student’s evaluation is 1 and the teacher’s
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Statistics can be defined as the method of collection and analysis of data in such a way as to minimize any uncertainty in the conclusion drawn from the data so as to be able to assess the degree of such uncertainty. It could be observed from the above definition that statistical analysis‚ error could arise but statisticians need to minimize such errors so as to be able to achieve a desirable result. Also statistics can be said to be; a branch of mathematics that deals with the collection‚ organization
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GMB 713 PROBLEM SET NO. 2 PROBLEM SOLVING: Solve the following problems. Show all pertinent solutions. 1. A car battery dealer is trying to determine which of the brands of car battery he is selling has a longer life span. He conducted an investigation by interview his customers and was able to get the following results: Brand X Brand Y Mean life span 4.5 years 4.9 years Standard deviation
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also become easier. Logistics for criminal enterprises has streamlined. Our modern conveniences have made the ability to enact crimes remotely greater than it has ever been before. Every day there is an increase in [globalization]‚ meaning that interactions and integrations amongst people‚ corporations and political systems from different countries are made simpler. This globalization has led to an ever number of cases involving [international crime] and [transnational crime]. (Chambliss &
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Applications of Business Statistics Statistics are used by all industries and businesses as a standardized unit of measurement for presenting data in a useful and meaningful format. Statistics can be used to measure historical performance and to forecast future targets. For business managers and leaders‚ statistics provide insight into how business units are performing relative to an organizations goals and objectives. Statistics also forecast future trends and are used in all areas of human thought
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