(20 points) Find and compare the standard deviations of the salaries and ages of the employees in the sales and advertising departments. Tell how you would you explain the meaning of these values when you present them to the owner.Answer: sales department the deviations for the salaries of the sales department is:16.6 the deviations for the ages of the sales department is: 7.1 advertising department the deviation for the salaries of the advertising department
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Statistics: Median‚ Mode and Frequency Distribution Given a list of numbers‚ The median is the “middle value” of a list. It is the smallest number such that at least half the numbers in the list are no greater than it. If the list has an odd number of entries‚ the median is the middle entry in the list after sorting the list into increasing order. If the list has an even number of entries‚ the median is equal to the sum of the two middle (after sorting) numbers
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providing a dental insurance plan. A random sample of 12 employees reveals the following family dental expenses (in dollars): 115‚ 370‚ 250‚ 593‚ 540‚ 225‚ 177‚ 425‚ 318‚ 182‚ 275‚ and 228. Construct a 90% confidence interval estimate for the standard deviation of family dental expenses for all employees of this corporation. Place your LOWER limit‚ in dollars rounded to 1 decimal place‚ in the first blank. Do not use a dollar sign‚ a comma‚ or any other stray mark. For example‚ 123.4 would be a legitimate
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Feltrinelli. Cohen‚ Daniel A.‚ Aiyesha Dey‚ and Thomas Z. Lys‚ 2005‚ Trends in earnings management and informativeness of earnings announcements in the pre- and post-Sarbanes Oxley periods‚ Working paper‚ New York University. Financial Accounting Standards Board Statement No. 5‚ Accounting for Contingencies ("FAS No. 5")‚ Deloitte FAQ‚ 2005. Financial Executive International (FEI)‚ 2004. Section 404 costs survey. Financial Reporting Council‚ 2004‚ The Turnbull guidance as an evaluation framework for
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using the mean would make it appear that the “average” person makes more money than is actually the case. True or false: The standard deviation and the range are sensitive to outliers. Explain your response. (1 point) True-the standard deviation is sensitive because variability exists in a set of scores that deviate from the mean. True or false: The standard deviation can never be 0. Explain your response. (1 point) False-if the SD can be zero then the variance can also be zero. If variance
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can see that domestic and foreign equity yields the same real return‚ with a slightly higher standard deviation for the latter one. This would imply that they would be better off investing solely on domestic equities. However‚ under the 2.a assumptions‚ since they have a 0.6 correlation‚ foreign equities will be part of the optimal portfolio. 3 – By using the estimates of expected returns‚ standard deviations and covariances among the asset classes‚ I will create N weights for each asset summing up
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TOPIC: Examining the capacity of human lungs. RESEARCH QUESTION: In what ways do gender‚ height‚ weight and practicing sports influence the capacity of human lungs? INTRODUCTION: Breathing is the process of respiration‚ during which air is inhaled into the lungs through the mouth or nose due to muscle contraction‚ and then exhaled due to muscle relaxation. It provides
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included into each of these rings every 2 meters along the trajectory is calculated‚ as well as the standard deviation. These particular elevation means and standard deviations are calculated for all the rings on every road. The values of average elevation and standard deviation refer to points which are located definitely on the roads‚ and can be used in order to determine the mean and standard deviation parameters of the Gaussian curve for each ring. The fuzzy logic Gaussian membership function is
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Bibliography: 9. Anonymous. (2009). Standard Deviation. http://standard-deviation.appspot.com/ 10 11. Anonymous. (last modified 2013). 68-95-99.7 rule. http://en.wikipedia.org/wiki/68-95-99.7_rule 12
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be (4.20‚ 7.00). The margin of error then must be (A) 5.60 (B) 2.80 (C) 11.20 (D) 1.40 2. _____ The number of days between receipt of an order and shipment of goods for in-stock items is normally distributed with a mean of 3.0 days and a standard deviation of 0.5 days. For a randomly selected order‚ the probability that the receipt-to-order delay time is more than 4 days is (A) 0.1269 (B) 0.0228 (C) 0.0583 (D) 0.1557 3. _____ For the same situation as in Question #2 above‚ the probability that
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