13. Variance and Standard Deviation (expected). Using the data from problem 13, calculate the variance and standard deviation of the three investments, stock, corporate bond, and government bond. If the estimates for both the probabilities of the economy and the returns in each state of the economy are correct, which investment would you choose considering both risk and return? Why? | |Forecasted Returns for Each Economy
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to these uncertain events precise... Random experiment “A random experiment is an experiment, trial, or observation that can be repeated numerous times under the same conditions... It must in no way be affected by any previous outcome and cannot be predicted with certainty.” i.e. it is uncertain (we don’t know ahead of time what the answer will be) and repeatable (ideally).The sample space is the set containing all possible outcomes from a random experiment. Often called S. (In set theory
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managers views are accurate, that it is impossible to select at random 10 ART cycles that did not result in a clinical pregnancy, several types of equations can and will be used. The equations that were used can be viewed below under Equations 1. The data and results from the equation tell us that it is possible to randomly select 10 ART cycles that produce no pregnancy. While it is possible for there to be 10 ART cycles chosen at random with none of them resulting in a clinical pregnancy, it is highly
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Review of random variables and summary statistics Definitions: • Sample space: A collection of all possible outcomes of a random experiment. Usually denoted by Ω. • Probability distribution: An assignment of numbers between 0 and 1 to each possible outcomes. Sum of these numbers should be equal to 1. Usually denoted by P. • Random variable: A function defined on a sample space. Usually denoted by X. • Expected value of X: µx = E[X] = P(ω)X(ω) ω∈Ω (if X is a continuous random variable
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STAT200 final exam 2016 Click Link Below To Buy: http://hwcampus.com/shop/stat200-final-exam-2016/ On Multiple Choice questions, please explain and/or show your work as necessary. Other questions please show your work as well. _____1. Ten different senators are randomly selected without replacement, and the number of terms that they have served are recorded. Does this constitute a binomial distribution? Select an answer, and then state why. a. No b. Yes Why: _____2. Which of
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TASK :1 Research Question: What are the effects of unemployment youths in my community of Greiggs? Task: 2 Reason for choosing the topic: The reason this topic was selected is because youths in Greiggs is that a lot of youths is hanging out on the block and getting into trouble, getting into fight and smoking. Task: 3 Method of Investigation use is a questionnaire The method of investigation used for this project was in the form of a questionnaire. The questionnaire was use because
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17 March 2015 In 2013, Michigan State University football team went a span of 194 minutes and 33 seconds without allowing a touchdown; Michigan State’s defense has allowed just 3.75 yards per play and 2.10 yards per rushing attempt, both of which rank No.1 in FBS; The Spartans lead the FBS in time of possession (34:56 per game).(SpartyOn.com) In Michigan, from 2009 to 2013 there were 88.9 percent of people age of 25 above have education of high school graduate or higher which is higher than United
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visual (e.g. simple-to-understand graphs) e.g. Present a summary report of this year business result to management Inferential (suy luận) : are systems of procedures that can be used to draw conclusions from datasets arising from systems affected by random variation. The type of inferential statistical procedure used depends upon the type of data collected as well as the distribution of the data. The procedures are usually used to test hypotheses and establish probability. e.g. Estimate the IQ score
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quantitative data? a. | interval and ordinal | b. | ratio and ordinal | c. | nominal and ordinal | d. | interval and ratio | ANS: D PTS: 1 TOP: Descriptive Statistics 3.A population is a. | the same as a sample | b. | the selection of a random sample | c. | the collection of all items of interest in a particular study | d. | always the same size as the sample | ANS: C PTS: 1 TOP: Descriptive Statistics 4.On a street, the houses are numbered from 300 to 450. The house numbers
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Erlang Distribution If interarrival or service times are not exponential, an Erlang random variable can often be used to model them. If T is an Erlang random variable with rate parameter R and shape parameter k, the density of T is given by R(Rt)kϪ1eϪRt f (t) ϭ ᎏᎏ (k Ϫ 1)! (t Ն 0) and k E(T) ϭ ᎏᎏ R and k var T ϭ ᎏᎏ R2 Birth–Death Processes For a birth-death process, the steady-state probability (pj) or fraction of the time that the process spends in state j can be found
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