59 34 49 27 33 18 35 20 a. Age Weeks Employed Mean 37.75 Mean 18.6875 Standard Error 2.974195 Standard Error 2.188452 Median 37.5 Median 18.5 Mode 25 Mode 21 Standard Deviation 11.89678 Standard Deviation 8.753809 Sample Variance 141.5333 Sample Variance 76.62917 Kurtosis -1.17143 Kurtosis -0.21626 Skewness 0.337402 Skewness 0.522601 Range 36 Range 30 Minimum 23 Minimum 6 Maximum 59 Maximum 36 Sum 604 Sum 299 Count 16 Count 16 Confidence Level(99.0%) 8.764138 Confidence Level(99
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X has a chi-square distribution with n degrees of freedom. Therefore E(Y) = E(X) = E(X) = n. Proposition 3. If X has a chi-square distribution with n degrees of freedom‚ then the variance of X is X2 = E((X - X)2) = 2n. If Y/ has a chi-square distribution with n degrees of freedom‚ then the variance of Y is Y2 = 2n2. Proof. Since X ~ (n/2‚2) it follows from Proposition 3 of section 2.2 that X2 = (n/2)(22) = 2n. One has Y/ = X where X has a chi-square distribution
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CAPM essay In the second scenario BBBY would use its $400 million in excess cash and borrow the remaining funds until Question 2 a) We will need to calculate the debt-to GDP ratio for each year separately in order to compute the total accumulation. The following equations and variables are used in question a) Year 1 Year 2 Year 3 Year 4 Year 5 Therefore‚ after 5 years the debt-to-GDP ratio will be equal to 104‚8 % (rounded to one decimal) b) The
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CHAPTER 7—SAMPLING AND SAMPLING DISTRIBUTIONS MULTIPLE CHOICE 1. From a group of 12 students‚ we want to select a random sample of 4 students to serve on a university committee. How many different random samples of 4 students can be selected? a.|48| b.|20‚736| c.|16| d.|495| ANS: D 2. Parameters are a.|numerical characteristics of a sample| b.|numerical characteristics of a population| c.|the averages taken from a sample| d.|numerical characteristics of either a sample or a population| ANS:
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Operations Management Listen-Up.com Case introduction Mai Chen‚ fresh from business school‚ has been hired by Listen-Up.com‚ a small‚ start-up manufacturer of hearing aids‚ to resolve the difficulties within its customer service group. The company’s products are sold over the Internet or phoned in using the company’s toll-free telephone lines‚ but telephone orders is the main and growing sales channel. During its three years of existence the company has experienced rapid growth with the
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The ANOVA Table Printer-friendly version For the sake of concreteness here‚ let’s recall one of the analysis of variance tables from the previous page: In working to digest what is all contained in an ANOVA table‚ let’s start with the column headings: (1) Source means "the source of the variation in the data." As we’ll soon see‚ the possible choices for a one-factor study‚ such as the learning study‚ are Factor‚ Error‚ andTotal. The factor is the characteristic that defines the populations
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below. (Note: before you would actually accept these as random numbers‚ you would also want to check the lag-j correlation coefficients for several more values of j Fill in the blanks below: Estimate for lag-1 correlation coefficient: 0.016457823 Variance of estimator: 0.006502 Test statistic (i.e.‚ ratio of lag-1 estimate to its standard deviation): 0.204107 p-value of hypothesis that lag-1 correlation coefficient is zero: 0.83827 1 Note that with eCampus‚ you must click
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Remington’s has large portions‚” on the Remington Data worksheet of the Remington’s Data Set workbook: Mean -3.26 Standard deviation-0.911 Range -3 4 Mean 3.261306533 Standard Error 0.064596309 Median 4 Mode 4 Standard Deviation 0.911243075 Sample Variance 0.830363941 Kurtosis -1.16899198 Skewness -0.663704706 Range 3 Minimum 1 Maximum 4 Sum 649 Count 199 Largest(1) 4 Smallest(1) 1 Confidence Level(95.0%) 0.12738505 Include your calculations in a 1- to 2-page document in which you also do the following:
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Financial Accounting 1. Obligation of business that represents the claims of these against the assets of the less cash is called? A. Asset B. An expense (WA) C. Revenue D. An equity E. Liability 2. Net income results when A. Assets > liability B. Revenue = expenses C. Revenue > expenses D. Revenue < expenses E. None 3. Resources owned by a business are referred to as A. Stockholders equity B. Liability C. Assets D. Revenue (WA) E. None 4. Expenses are incurred
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Normal Distribution:- A continuous random variable X is a normal distribution with the parameters mean and variance then the probability function can be written as f(x) = - < x < ‚ - < μ < ‚ σ > 0. When σ2 = 1‚ μ = 0 is called as standard normal. Normal distribution problems and solutions – Formulas: X < μ = 0.5 – Z X > μ = 0.5 + Z X = μ = 0.5 where‚ μ = mean σ = standard deviation X = normal random variable Normal Distribution Problems and Solutions – Example
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