(where the simple model is nested within the complicated one). One case where the distribution of the test statistic is an exact chi-squared distribution is the test that the variance of a normally distributed population has a given value based on a sample variance. Such a test is uncommon in practice because values of variances to test against are seldom known
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1. A quality control engineer knows that 10% of the microprocessor chips produced by a machine are defective. Out of a large shipment‚ five chips are chosen at random. What is the probability that none of them is defective? What is the probability that at least one is defective? 2. An automated manufacturing process produces a component with an average width of 7.55 centimeters‚ with a standard deviation of 0.02 centimeter. All components deviating by more than 0.05 centimeter from the mean must
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Quantitative methods Time value of money Effective annual rate (EAR) Effective annual rate (EAR) = (1+stated annual rate/frequency‚ m) ^ m-1 Annuities Ordinary annuities: cash flow at the end of each period‚ normal one; Annuities due: cash flow at the beginning of each period‚ first payment =t0; Calculator setting: [2nd][BGN]-[2ND][SET]; same procedure for setback to END; Payment at beginning of next three years‚ N=4‚ always +1 using annuities due It is a BGN question‚ if first payment is today
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than 10 minutes for a bus. 3. A recent study indicates that the annual cost of maintaining and repairing a car in a town in Ontario averages 200 with a variance of 260. If a tax of 20% is introduced on all items associated with the maintenance and repair of cars (i.e.‚ everything is made 20% more expensive)‚ what will be the variance of the annual cost of maintaining and repairing a car? (Ans: 374) 4. The time to failure of a component in an electronic device has an exponential distribution
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0.0749 + 0.0749 = 0.1498. 2. [§8-53] Let X1 ‚ . . . ‚ Xn be i.i.d. uniform on [0‚ θ]. (a) Find the method of moments estimate of θ‚ and the mean‚ variance‚ bias‚ and MSE of the MME. (b) The mle of θ is θˆ = max Xi . The pdf of max1≤i≤n Xi (How do we 1≤i≤n find this? ) is n−1 nx f (x|θ) = θn 0 0<x<θ . otherwise Calculate the mean and variance of the mle.
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could carry out calculations easily. Methodology First‚ since all the data came from the case and was already on an Excel spreadsheet‚ we began by calculating the expected time‚ variance‚ expedition available and slope for each task using the formulas below. Expected time=(optimistic+4*(most likely)+pessimistic)/6 Variance=((pessimistic-optimistic)/6)^2 Expedition available=Crash time-Expected time Slope= Expedition available/(Crash cost-Normal cost) Calculation results can be found in Table 1 in
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Using EXCEL for Asset Allocation and Performing Market Efficiency Studies 1. Introduction There are several features in EXCEL that are very useful for asset allocation and performing market efficiency studies. These features used in conjunction with live or historical data allows one to apply the sophisticated techniques discussed in this class in practical situations. This write-up will introduce students to the various mathematical and statistical functions available in EXCEL and explain
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University of Phoenix OnlineCourse: RES / 341QUIZ # 1(Chapter 3 and 4 from Applied Statistics in Business and Economics )45 Questions [Each Question = 1 Point]SOLUTIONPlease mark one answer for all multiple choice questions with RED!Chapter 3Multiple Choice1. Which is not a tip for effective bar charts?A) Time usually goes on the horizontal axis. B) Bar height or length should be proportional to the quantity displayed. C) Label data values at the top of each bar unless graphing lots of data. D)
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| Basic math symbols Symbol | Symbol Name | Meaning / definition | Example | = | equals sign | equality | 5 = 2+3 | ≠ | not equal sign | inequality | 5 ≠ 4 | > | strict inequality | greater than | 5 > 4 | < | strict inequality | less than | 4 < 5 | ≥ | inequality | greater than or equal to | 5 ≥ 4 | ≤ | inequality | less than or equal to | 4 ≤ 5 | ( ) | parentheses | calculate expression inside first | 2 × (3+5) = 16 | [ ] | brackets | calculate expression inside first
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Running Heading: COST ALLOCATION AND VARIANCES Cost Allocation and Variances- Chapter 12 & 13 Text Book Questions Stacey S. Swafford University of Phoenix ACC 561 Dr. Janice Mereba April 23‚ 2010 Chapter 12 Excel Application Exercise 12-59: Allocating Costs Using Direct and Step-Down Methods p. 584 Goal: Create an Excel spreadsheet to allocate costs using the direct method and the step-down method. Use the results to answer questions about your findings. Scenario: Antonio
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