and the women have a mean height of 1.62 m. Find the mean height of the 100 mathematicians. (Total 4 marks) 3. The mean of the population x1‚ x2‚ ........ ‚ x25 is m. Given that = 300 and = 625‚ find (a) the value of m; (b) the standard deviation of the population. (Total 4 marks) 4. A supermarket records the amount of money d spent by customers in their store during a busy period. The results are as follows: Money in $ (d)|0–20|20–40|40–60|60–80|80–100|100–120|120–140| Number of customers
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analysing the data is determining if outliers exists within the data. The presence of outliers must be evaluated because their existence could distort the data and make it inaccurate. In order to determine if outliers exist the average and standard deviation must be calculated in order to calculate the Z score‚ which will show‚ wither or not outliers exist. In this instance to outliers where found present in the data set as all of the data fell within the +3‚-3 range‚ the largest positive outlier was
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MARIA MONTESSORI BIOGRAPHY Maria Montessori was born on August 31‚ 1870‚ in Chiaravalle‚ Italy. In 1907 she was placed in charge of the Casa dei Bambini school. By 1925‚ more than 1‚000 Montessori schools had opened in the United States. By 1940 the Montessori movement had faded‚ but it was revived in the 1960s. During World War II‚ Montessori developed Education for Peace in India‚ and earned two Nobel Peace Prize nominations. She died May 6‚ 1952‚ in Noordwijk aan Zee‚ Netherlands. Early Life
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1a. What is the greatest task of each child? Mother Nature has endowed every child with the necessary powers for a great task is that of building the adult human being. Dr. Maria Montessori emphatically states that the first and the foremost of all that the child needs to do is the great and miraculous construction of a healthy human adult. All the different aspects of teaching‚ child rearing or even child care should revolve around this thought especially when we are dealing with the two to six
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psychology‚ Maria Montessori was one of them. Maria was born in 1870 and became the first woman in Italy to receive a medical degree. She embedded herself into her work and made significant contributions to the fields of psychiatry‚ anthropology and education. Maria was acclaimed for her education method that built on the way children learned naturally. She believed in order expand any system of education a favorable environment must be created to allow the flow of a child’s natural gift. Maria Montessori
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Standard Deviation in the Business World QRB/501 Abstract On Standard Deviations in Job Performance The purpose of this study was to compare the expected payoffs from personnel programs based on standard deviation of job performances in dollars‚ the Global Estimation model‚ and the CREPID procedure. The study was done for route salesmen of a large soft drink bottling company. The Global Estimation model and the CREPID procedure were behaviorally based‚ where the standard deviation of job performance
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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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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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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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