STATISTICS 1. If the arithmetic mean of 7‚9‚11‚13‚ x‚ 21 is 13‚find the value of x. 2. The mean of 24 numbers is 35. If 3 is added to each number‚ what will be new mean.? 3. The mean of 20 numbers is 43. If 6 is substracted from each of the numbers‚what will be new mean? 4. The mean of 15 numbers is 27. If each numbers is multiplied by 4‚what will be new mean? 5. The mean weight of 6 boys in a group is 48 kg. The individual weights of five of them are 51kg‚ 45kg‚ 49kg‚ 46kg
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案例：MRP，ValentinCase：Valentin Valentin Inc. is a company who uses MRP to organize its production. The lot-sizing technique they chose for all references is lot-for-lot. They provide part of the product tree structure for products A and B (the figures shown indicate the number of component required to produce a product of the next level). Product Y(2) Product B A Z(3) Y(1) Z(1) W(2) The components Y and W are used exclusively in the production of products A and B. They are produced by the same
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MAT/115 – Basic Mathematics Cumulative Test: Chapters 3 and 4 01) Find the least common multiple of 12 and 18. Multiples for 12 are 24‚ 36‚ 48‚ 60‚ Multiples for 18 are 36‚ 54‚ 72‚ 90 Answer: 36 02) Find the least common multiple of 3‚ 6 and 9. Multiples for 3 are 6‚ 9‚ 12‚ 15‚ 18‚ 21‚ 24‚ 27‚ 30‚ 33‚ 36 Multiples for 6 are 12‚ 24‚ 30‚ 36‚ 42‚ 48‚ 54‚ 60‚ 66‚ 72 Multiples for 9 are 18‚ 27‚ 36‚ 45‚ 54‚ 63‚ 72‚ 81‚ 90‚ 99‚ 108 Answer: 36 03) Add. Write the answer in lowest
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An investigation into the effect of changing the concentration on the rate of reaction Aim: To investigate into the effect of changing the concentration on the rate of reaction Variables: · Keep the same volume · Keep the same length of magnesium · Change the amount of acid · Change the amount of water Method: · Set up apparatus as shown · Add 30ml of hydrochloric acid into the beaker · Measure 5cm of magnesium · Add the 5cm of magnesium to the hydrochloric acid · Put a bong
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Harshad Mehta & Ketan Parekh Scam ShareThis Harshad Mehta: the high-profile stockbroker Harshad Shantilal Mehta (1954-2002) was an Indian stockbroker who grabbed headlines for the notorious BSE security scam of 1992. Born in a lower middle-class Gujarati Jain family‚ Mehta spent his early childhood in Mumbai where his father was a small-time businessman. The family relocated to Raipur in Chhattisgarh after doctors advised Mehta’s father to shift to a drier place on account of his health
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Question No. 1 P: 219 Explain the difference between short run and long run production function; cite one example of this difference in a business situation. The short run production function shows the maximum quantity of a good or service that can be produced by a set of inputs‚ assuming the amount of at least one of the inputs used remains unchanged. While a long run production function shows the maximum quantity of a good or service that can be produced by a set of inputs‚ assuming the
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following samples: (i) 7‚ 4‚ 6‚ 2‚ 6‚ 7‚ 3‚ 5 (ii) 0‚ -3‚ 5‚ -2‚ -6‚ 4‚ 7‚ 9‚ 4‚ -3‚ 0‚ 2 b. The number of days for which each of 15 office workers of a firm was absent during a one-month period is as sfollows: 0‚ 1‚ 1‚ 3‚ 0‚ 0‚ 2‚ 5‚ 0‚ 1‚ 1‚ 2‚ 0‚ 1‚ 1 Calculate the interquartile range‚ variance and standard deviation of the number of days absent. 2. The number of hours a student spent studying for a statistics course over the past seven days was recorded as follows:
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studying the relationship between the pump price of gasoline and the number of gallons sold. For a sample of 20 stations last Tuesday‚ the correlation was .78. At the .01 significance level‚ is the correlation in the population greater than zero? Significance = .01 T= (.78√20- 2)/(√1-(〖.78)〗^2 ) T=5.288 DF = 18 Correlation= .78 CV= 2.552 Reject null 11) The Airline Passenger Association studied the relationship between the number of passengers on a particular flight and the cost of the flight
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Individual Assignment Assignment # 03 Prepared for Kanchan Das‚ Ph.D. Course Instructor Operations Management (MGT-314) Summer-2012 Prepared by Md. Tanvir Rahman Mazumder 0930-319-030 Date of Submission: 30-07-2012 Question from chapter 12 1. a i) Annual demand= 40*260=10400 boxes Q*= (2DS/H) ^0.5= (2*10400*$60/30) ^0.5= 203.96 Ii) TC= (Q/2)*H+ (D/Q)*S= (203.96/2)*$30+ (10400/203.96)*$60
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Largest Note: One can order the data values from smallest to largest to help find the range. The number of classes should be between 5 and 15. • • Fewer than 5 classes cause excessive summarization. More than 15 classes leave too much detail. Class Width • • • Divide the range by the number of classes for an approximate class width Round up to a convenient number 51 So if the number of classes Approximat e Class Width is = 6‚ then = 8.5 6 Class Width = 10 The midpoint of each class
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