BE01106 - BUSINESS STATISTICS ASSIGNMENT – PART I SEMESTER 2‚ 2014 _________________________________________________________________________ The complete BEO1106 assignment (all three parts) accounts for 20% of the overall assessment in the unit. This first part of the BEO1106 assignment is to be completed in your own time and must be submitted for correction in the tutorial of week 6. No time extensions will be granted although special consideration applications may be accepted from students
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5.23 Let x be a normally distributed random variable having mean = 30 and standard deviation . Find the z value for each of the following observed values of x: In each case‚ explain what the s value tells us about how the observed value of x compares to the mean 5.29 Weekly demand at a grocery store for a brand of breakfast cereal is normally distributed with a mean of 800 boxes and a standard deviation of 75 boxes‚ a. What is the .probability that weekly demand is (1) 959 boxes or less? (2) More
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Omkar & Yaying Wednesday 5-6pm WEEK 3 BES PASS Descriptive Statistics Population - a set of all possible observations. Sample - a portion of a population. We often use information concerning a sample to make an inference (conclusion) about the population. Parameter - describes a characteristic of the population‚ eg: the population variance Statistic- describes a characteristic of a sample‚ eg: the sample variance Frequency Distribution and Histograms Class - a collection of
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------------------------------------------------- Introduction: This data set we have been assigned to analyze highlights the fuel-efficiency of the mentioned cars relative to several other variables. One of the major issues most stressed upon to date is the ever-increasing threat of environmental degradation‚ global warming‚ and the need to conserve our scarce natural resources. This has led us to examine the fuel efficiency of cars. With rising gas prices‚ owning a car can become quite costly
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. Sydney‚ N. S. W.: McGraw-Hill Parkinson‚ J. (2010). Becoming a successful manager : power tools for making a smooth transition to managing a team. New York: McGraw-Hill. Robert‚ L. Katz. (1993) . Skills of an effective administrator. Harvard Business School Press. Nina Matikainen. (2005). Working in multicultural environment ‚58-62 Amos Adeoye idowu .(2009). Challenges of leadership in corporate management and turnaround‚ 61-65
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Chapters 1-3:In order to control costs‚ a company wishes to study the amount of money its sales force spends entertaining clients. The following is a random sample of six entertainment expenses (dinner costs for four people) from expense reports submitted by members of the sales force. $157‚ $132‚ $109‚ $145‚ $125‚ $139. Calculate the mean and sample variance(s^2) and standard deviation. Mean = 807/6 = 134.5. Sample Variance = (109925 – (807^2/6)/6-1 = (109925 – 108541)/5 = 1384/5 = 276.8.
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A Quiz Business Bear Question 1 5 out of 5 points To be successful entrepreneurs must be comfortable risking their money and _____ to start and manage a business. Answer Selected Answer: time Correct Answer: time Question 2 0 out of 5 points _____ boomed as mass production took hold during the Industrial Revolution. Answer Selected Answer: Skilled artisan workshops Correct Answer: Factory production Question 3
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Q1 In a test given to 500 students‚ the average marks was 56 and the standard deviation was 20. Find (i) the number of students exceeding a score of 60. (ii) the number of students having marks between 50 and 70. (iii) the value of marks exceeded by the top 100 students. Answer-------- (i) number of students exceeding a score of 60=210 (ii) The number of students having marks between 50 and 70=188 (iii) The value of marks exceeded by the top 100 students=73 Q2. Following
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for each observation. These are found by subtracting the mean value from the selected value and dividing by the standard deviation. The Normal Probability Distribution Find an example of application of probability theory in your workplace or business. Show that the reasons that your workplace uses probability analysis‚ such as probability of risk calculations or percent defects or percent for pass or fail of a
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pharmaceutical company is testing the effectiveness of a new drug for lowering cholesterol. As part of this trial‚ they wish to determine whether there is a difference between the effectiveness for women and for men. Using = .05‚ what is the value the test statistic? Women Men Sample size 50 80 Mean effect 7 6.95 Sample variance 3 4 A. t = 3.252 B. z = 0.455 C. z = 0.081 D. z = 0.151 ANSWER: D Question 2: A field researcher is gathering data on the trunk diameters
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