After reading the supplement article on Business Analytics linked to the week 1 schedule, write an essay on how business analytics impacts you today, or its potential role in your chosen career path. Do research for your paper, or interview someone who works in your area. The goals of this paper are two-fold: (1) focus on high quality writing, using the COBE Writing Styles Guide for writing help and citations. (2) consider the importance of BI from a personal/work/career perspective.

## After reading the supplement article on Business Analytics linked to the week 1 schedule, write an essay on how business analytics impacts you today, or its potential role in your chosen career path. Do research for your paper, or interview someone who works in your area. The goals of this paper are two-fold: (1) focus on high quality writing, using the COBE Writing Styles Guide for writing help and citations. (2) consider the importance of BI from a personal/work/career perspective.

one page summary for osh (Occupational safety and health (OSH) also commonly referred to as occupational health and safety (OHS) or workplace health and safety (WHS) is an area concerned with the safety, health and welfare of people engaged in work or employment.) . The questions are 1. What happened? 2. Why it happened? 3. What could be done so it does not happen again?

## one page summary for osh (Occupational safety and health (OSH) also commonly referred to as occupational health and safety (OHS) or workplace health and safety (WHS) is an area concerned with the safety, health and welfare of people engaged in work or employment.) . The questions are 1. What happened? 2. Why it happened? 3. What could be done so it does not happen again?

one page summary for osh (Occupational safety and health (OSH) … Read More...
1. The reaction time of a driver to visual stimulus is normally distributed with a mean of 0.2 seconds and a standard deviation of 0.1 seconds. 1‐1. (2 points) What is the probability that a reaction requires more than 0.5 seconds? 1‐2. (2 points) What is the probability that a reaction requires between 0.4 and 0.5 seconds? 1‐3. (2 points) What is the reaction time that is exceeded 95% of the time? 2. Spherical Uniform Distribution (Google! You do not have to explain why): 2‐1. (2 points) How can we pick a set of random points uniformly distributed on the unit circle x12 + x 2=1? 2‐2. (2 points) How can we pick a set of random points uniformly distributed on the 4‐dimensional unit 2 2 2 2 2 sphere x1 + x2 + x3 + x4 + x5 =1? 3. The random variable X has a binomial distribution with n = 19 and p = 0.4. Determine the following probabilities. (You may use computer. But, you have to show the formula.) 3‐1. (2 points) P(X ≤ 12) 3‐2. (2 points) P(X ≥ 18) 3‐3. (2 points) P(13 ≤ X < 15) 4. (2 points) Show the mean and the variance of the triangular distribution with lower limit a, upper limit b and mode c, where a < b and a ≤ c ≤ b. (You must show why.) 5. (2 points) An electronic office product contains 5000 electronic components. Assume that the probability that each component operates without failure during the useful life of the product is 0.999, and assume that the components fail independently. Approximate the probability that 10 or more of the original 5000 components fail during the useful life of the product. 6. Consider the following system made up of functional components in parallel and series. C2 0.80 C1 0.90 C4 0.95 C3 0.85 6‐1. (2 points) What is the probability that the system operates? 6‐2. (2 points) What is the probability that the system fails due to the components in series? Assume parallel components do not fail. 6‐3. (2 points) What is the probability that the system fails due to the components in parallel? Assume series components do not fail. 6‐4. (2 points) Compute and compare the probabilities that the system fails when the probability that component C1 functions is improved to a value of 0.95 and when the probability that component C2 functions is improved to a value of 0.85. Which improvement increases the system reliability more? 7. (2 points) Suppose that the joint distribution of X and Y has probability density function f(x, y) = 0.25xy for 0 < x < 2 and 0 < y < 2. Compute V(2X + 3Y). (Show all your work.)

## 1. The reaction time of a driver to visual stimulus is normally distributed with a mean of 0.2 seconds and a standard deviation of 0.1 seconds. 1‐1. (2 points) What is the probability that a reaction requires more than 0.5 seconds? 1‐2. (2 points) What is the probability that a reaction requires between 0.4 and 0.5 seconds? 1‐3. (2 points) What is the reaction time that is exceeded 95% of the time? 2. Spherical Uniform Distribution (Google! You do not have to explain why): 2‐1. (2 points) How can we pick a set of random points uniformly distributed on the unit circle x12 + x 2=1? 2‐2. (2 points) How can we pick a set of random points uniformly distributed on the 4‐dimensional unit 2 2 2 2 2 sphere x1 + x2 + x3 + x4 + x5 =1? 3. The random variable X has a binomial distribution with n = 19 and p = 0.4. Determine the following probabilities. (You may use computer. But, you have to show the formula.) 3‐1. (2 points) P(X ≤ 12) 3‐2. (2 points) P(X ≥ 18) 3‐3. (2 points) P(13 ≤ X < 15) 4. (2 points) Show the mean and the variance of the triangular distribution with lower limit a, upper limit b and mode c, where a < b and a ≤ c ≤ b. (You must show why.) 5. (2 points) An electronic office product contains 5000 electronic components. Assume that the probability that each component operates without failure during the useful life of the product is 0.999, and assume that the components fail independently. Approximate the probability that 10 or more of the original 5000 components fail during the useful life of the product. 6. Consider the following system made up of functional components in parallel and series. C2 0.80 C1 0.90 C4 0.95 C3 0.85 6‐1. (2 points) What is the probability that the system operates? 6‐2. (2 points) What is the probability that the system fails due to the components in series? Assume parallel components do not fail. 6‐3. (2 points) What is the probability that the system fails due to the components in parallel? Assume series components do not fail. 6‐4. (2 points) Compute and compare the probabilities that the system fails when the probability that component C1 functions is improved to a value of 0.95 and when the probability that component C2 functions is improved to a value of 0.85. Which improvement increases the system reliability more? 7. (2 points) Suppose that the joint distribution of X and Y has probability density function f(x, y) = 0.25xy for 0 < x < 2 and 0 < y < 2. Compute V(2X + 3Y). (Show all your work.)

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Homework 4 – Construction and Water Management 80 points total Refer to Lecture 6a – Construction Part I, 6b – Construction Part II, and Chapter 6 in your textbook. 1. What is the difference between an owner, a design professional, and a constructor? (6 points) 2. Briefly explain the process of ‘Design-bid-build’ construction. How is it different than a ‘design-build’ type of project? (6 points) 3. Describe, in at least one sentence, the main function of the following construction equipment (2 points each): a. Crane b. Skidsteer c. Excavator d. Backhoe e. Grader f. Pile driver 4. What are 5 major components of a construction staging plan? (5 points) 5. What are 5 administrative controls used for environmental management on a construction site? (For example: protecting native plants) (5 points) 6. Explain the major differences between scaffolding, falsework, and formwork. (6 points) Refer to Lecture 7a, slides 11, 12, & 13 and pages 165-166 in your textbook for background information on using the Rational Method for flowrate calculations. 7. The Bush library park is planted with native grasses and is 15 acres in size. Assume the drainage system was designed to handle a 1-hour storm of 100-year-storm magnitude. The intensity data for different storm events for Dallas County can be found in this document, on page 6: http://iswm.nctcog.org/Documents/archives/site_development_manual/Appendices.pdf a. What is the expected flowrate for the native park area, calculated using the Rational Method? The runoff coefficient for the park can be approximated as 0.10. (6 points) b. What would be the design flowrate if they had paved over the area to create a large parking lot, instead of the park? Assume the runoff coefficient of concrete to be 0.92. (6 points) 8. Refer to page 94 in your textbook. What are four common urban stormwater pollutants and their possible sources? What are the possible impacts from each pollutant to receiving waters? (12 points) Refer to slides 6, 7, and 8 of Lecture 7b, and your in-class assignment for the following question. 9. What is the horizontal pressure force from water stored behind a dam wall if the dam is filled to capacity at 425ft? How high up from the bottom of the dam does the force act? (10 points) Read the following article and answer the question below: http://news.nationalgeographic.com/news/2006/06/060609-gorges-dam_2.html 10. What are three negative environmental, social, or political impacts in China from the Three Gorges Dam? What are three positive impacts? (6 points)

## Homework 4 – Construction and Water Management 80 points total Refer to Lecture 6a – Construction Part I, 6b – Construction Part II, and Chapter 6 in your textbook. 1. What is the difference between an owner, a design professional, and a constructor? (6 points) 2. Briefly explain the process of ‘Design-bid-build’ construction. How is it different than a ‘design-build’ type of project? (6 points) 3. Describe, in at least one sentence, the main function of the following construction equipment (2 points each): a. Crane b. Skidsteer c. Excavator d. Backhoe e. Grader f. Pile driver 4. What are 5 major components of a construction staging plan? (5 points) 5. What are 5 administrative controls used for environmental management on a construction site? (For example: protecting native plants) (5 points) 6. Explain the major differences between scaffolding, falsework, and formwork. (6 points) Refer to Lecture 7a, slides 11, 12, & 13 and pages 165-166 in your textbook for background information on using the Rational Method for flowrate calculations. 7. The Bush library park is planted with native grasses and is 15 acres in size. Assume the drainage system was designed to handle a 1-hour storm of 100-year-storm magnitude. The intensity data for different storm events for Dallas County can be found in this document, on page 6: http://iswm.nctcog.org/Documents/archives/site_development_manual/Appendices.pdf a. What is the expected flowrate for the native park area, calculated using the Rational Method? The runoff coefficient for the park can be approximated as 0.10. (6 points) b. What would be the design flowrate if they had paved over the area to create a large parking lot, instead of the park? Assume the runoff coefficient of concrete to be 0.92. (6 points) 8. Refer to page 94 in your textbook. What are four common urban stormwater pollutants and their possible sources? What are the possible impacts from each pollutant to receiving waters? (12 points) Refer to slides 6, 7, and 8 of Lecture 7b, and your in-class assignment for the following question. 9. What is the horizontal pressure force from water stored behind a dam wall if the dam is filled to capacity at 425ft? How high up from the bottom of the dam does the force act? (10 points) Read the following article and answer the question below: http://news.nationalgeographic.com/news/2006/06/060609-gorges-dam_2.html 10. What are three negative environmental, social, or political impacts in China from the Three Gorges Dam? What are three positive impacts? (6 points)

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