Chapter 12 Problems 1. Cash flow (LO2) Assume a corporation has earnings before depreciation and taxes of $100‚000‚ depreciation of $50‚000‚ and that it has a 30 percent tax bracket. Compute its cash flow using the format below. Earnings before depreciation and taxes _____ Depreciation _____ Earnings before taxes _____ Taxes @ 30% _____ Earnings after taxes _____ Depreciation _____
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calculator results compare to the mean and absolute deviation? How do these results compare to your own individual data? Which method is more accurate? The mean was 10 g/mL‚ while the calculator’s results for the line of best fit showed that the density was 9.615736862 g/mL. This is not a large difference‚ but the calculated average is more accurate in comparison to the accepted value of the density of lead‚ or 11.343716 g/mL. The average absolute deviation‚ when done by hand‚ was .8 g/mL. Because 10-9
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14‚ 15‚ 15‚ 16. The mean is 14.0mm.What is the best estimate of the standard deviation? -1mm 5 1000 bananas were collected from a single plantation and weighed.Their masses formed a normal distribution. How many bananas would be expected to be within 2 standard deviations of the mean? -950 6 In a normal distribution‚ what percentage of values fall within ±1 standard deviation of the mean and ±2 standard deviations of the mean? -1= 68% -2=95% 7 The lengths of the leaves of dandelion plants
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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? ANSWER Variance of Stock = 0.10 x (0.25 – 0.033)2 + 0.15 x (0.12 – 0.033)2 + 0.50 x (0.04 – 0.033)2 + 0
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decreases by -0.347 average number of hours per week. Next‚ we have to interpret the random error component ( ) of the least squares line. The estimate of error standard deviation for this particular data set is 12.28455 which suggests that the work-life balance score (y) values should be two times of the standard deviation. This can be best expressed as in the equation of 2s = 2(12.28455) which equals 24.57 average hours per week. Then‚ we can analyze the accuracy of hypothesis model to see
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tar per cigarette and a standard deviation equal to 1.0 milligram. Suppose a sample of 100 low-tar cigarettes is randomly selected from a day’s production and the tar content is measured in each. Assuming that the tobacco company’s claim is true‚ what is the probability that the mean tar content of the sample is greater than 4.15 milligrams? [0.00621] 2. The safety limit of a crane is known to be 32 tons. The mean weight and the standard deviation of a large number of iron rods are
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precision can be made using the results. Precision refers to how close a set of results are to each other. In this lab‚ the percent relative average deviation can be used as an indicator of preciseness. Percent relative average deviation is a measure of how tightly clustered a set of data points is around a mean. A low percent relative average deviation indicates that the data points are tightly clustered around the mean; moreover‚ if the
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obtain the highest overall reliability? 17. A major television manufacturer has determined that its 19-inch color TV picture tubes have a mean service life that can be modeled by a normal distribution with a mean of six years and a standard deviation of one-half year. a. What probability can you assign to service lives of at least (1) Five years? (2) Six years? (3) Seven and one-half years? b. If the manufacturer offers service contracts of four years on these picture tubes‚ what percentage
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v Describe what Montessori meant by’ New Education’ Dr. Maria Montessori is the creator for the Montessori Education Method for a new world who devoted her life to improve children’s education excellence. Her educational method is widely used in schools or at home for children 3 t0 6 years old. Maria Montessori lived through one of the traumatic time eras of the world history‚ which changed everybody’s lives including children. It was the time of anxiety‚ cruelty‚ death‚ family separation and
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Standard Deviation use in the Business World Abstract This paper evaluates the role of standard deviation in business. As part of the evaluation‚ a brief summary of five different peer reviewed papers has been presented. Topics such as‚ the purpose of the study‚ the research questions‚ the hypothesis of the study‚ and the main findings of the study for the five papers‚ have been summarized by each of the learning team members. Standard Deviation use in the Business World Standard Deviation is
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