Submitted By ndanhtuan

Words 723

Pages 3

Words 723

Pages 3

A commercial pool management company is seeking to reduce the costs of maintaining swimming pools. The maintenance cost is mostly driven by the amount of chlorine that is needed to keep the water clear and relatively free of germs. The company hired a new graduate from York University (“YorkU”) to analyze how much chlorine is needed. It is believed that the speed at which chlorine is depleted is dependent on the temperature (degrees Fahrenheit) of the water (higher temperatures use chlorine faster); pH level, which is a measure of the acidity of the water (pH ranges from 0 to 14, where 0 is very acidic and 14 is very alkaline; levels around 7.5 use the least chlorine); and weather (sunshine uses up chlorine). The YorkU graduate recorded the percentage of chlorine depletion during 8-hour days, water temperature, pH level and weather condition (mainly cloudy, sunny and partly sunny). Using Excel’s

Regression Tool, the YorkU graduate obtained the following Excel output.

Regression Statistics

Multiple R

A

R Square

B

Adjusted R Square

C

Standard Error

D

Observations

210

ANOVA df SS

MS

F

Significance F

Regression

E

6596

I

77.00

0.0000

Residual

F

H

J

Total

G

10091

Coefficients

Standard Error

Intercept

1003

55.12

18.19

0.0000

Temperature

0.194

0.029

K

0.0000

PH Level

-265.6

14.75

-18.01

0.0000

PH Level-Sq

17.76

0.983

18.07

0.0000

Mainly Cloudy

-1.07

0.700

-1.53

0.1282

Sunny

1.16

0.700

1.65

0.0997

t Stat

P-Value

1. Clearly define the independent variables being considered.

2. Specify the multiple regression model using all independent variables being considered.

3. Fill in the following table with the correct values of E, F and G.

ANSWERS

E -…...

...STAT 125 HK Business Statistics Midterm Exam http://hwguiders.com/downloads/stat-125-hk-business-statistics-midterm-exam/ STAT 125 HK Business Statistics Midterm Exam Question 1 The probability that house sales will increase in the next 6 months is estimated to be 0.25. The probability that the interest rates on housing loans will go up in the same period is estimated to be 0.74. The probability that house sales or interest rates will go up during the next 6 months is estimated to be 0.89. The probability that house sales will increase but interest rates will not during the next 6 months is: 1. 0.065 2. 0.15 3. 0.51 4. 0.89 Question 2 The process of using sample statistics to draw conclusions about true population parameters is called 1. statistical inference. 2. the scientific method. 3. sampling. 4. descriptive statistics. Question 3 Which of the following is NOT a reason for obtaining data? 1. Data are needed to formulate a statistical model. 2. Data are needed to evaluate conformance to standards. 3. Data are needed to measure performance of an ongoing production process. 4. Data are needed to provide input to a study. Question 4 A catalog company that receives the majority of its orders by telephone conducted a study to determine how long customers were willing to wait on hold before ordering a product. The length of time was found to be a random variable best approximated by an exponential distribution with a mean equal to 3...

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...STAT 125-HK. Business Statistics Midterm Exam To Buy this Class Copy & paste below link in your Brower http://homeworkregency.com/downloads/stat-125-hk-business-statistics-midterm-exam/ Or Visit Our Website Visit : http://www.homeworkregency.com Email Us : homeworkregency@gmail.com STAT 125-HK. Business Statistics Midterm Exam Question 1 2 points Save The probability that house sales will increase in the next 6 months is estimated to be 0.25. The probability that the interest rates on housing loans will go up in the same period is estimated to be 0.74. The probability that house sales or interest rates will go up during the next 6 months is estimated to be 0.89. The probability that house sales will increase but interest rates will not during the next 6 months is: a. 0.065 b. 0.15 c. 0.51 d. 0.89 Question 2 2 points Save The process of using sample statistics to draw conclusions about true population parameters is called a. statistical inference. b. the scientific method. c. sampling. d. descriptive statistics. Question 3 2 points Save Which of the following is NOT a reason for obtaining data? a. Data are needed to formulate a statistical model. b. Data are needed to evaluate conformance to standards. c. Data are needed to measure performance of an ongoing production process. d. Data are needed to provide input to a study. Question 4 2 points Save A......

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...STAT 125-HK. Business Statistics Midterm Exam http://homeworkfy.com/downloads/stat-125-hk-business-statistics-midterm-exam/ To Get this Tutorial Copy & Paste above URL Into Your Browser Hit Us Email for Any Inquiry at: Homeworkfy@gmail.com Visit our Site for More Tutorials: (http://homeworkfy.com/ ) Question 1 2 points Save The probability that house sales will increase in the next 6 months is estimated to be 0.25. The probability that the interest rates on housing loans will go up in the same period is estimated to be 0.74. The probability that house sales or interest rates will go up during the next 6 months is estimated to be 0.89. The probability that house sales will increase but interest rates will not during the next 6 months is: a. 0.065 b. 0.15 c. 0.51 d. 0.89 Question 2 2 points Save The process of using sample statistics to draw conclusions about true population parameters is called a. statistical inference. b. the scientific method. c. sampling. d. descriptive statistics. Question 3 2 points Save Which of the following is NOT a reason for obtaining data? a. Data are needed to formulate a statistical model. b. Data are needed to evaluate conformance to standards. c. Data are needed to measure performance of an ongoing production process. d. Data are needed to provide input to a study. Question 4 2 points Save A catalog company that receives the majority......

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...STAT 125 HK Business Statistics Midterm Exam http://hwguiders.com/downloads/stat-125-hk-business-statistics-midterm-exam/ STAT 125 HK Business Statistics Midterm Exam Question 1 The probability that house sales will increase in the next 6 months is estimated to be 0.25. The probability that the interest rates on housing loans will go up in the same period is estimated to be 0.74. The probability that house sales or interest rates will go up during the next 6 months is estimated to be 0.89. The probability that house sales will increase but interest rates will not during the next 6 months is: 1. 0.065 2. 0.15 3. 0.51 4. 0.89 Question 2 The process of using sample statistics to draw conclusions about true population parameters is called 1. statistical inference. 2. the scientific method. 3. sampling. 4. descriptive statistics. Question 3 Which of the following is NOT a reason for obtaining data? 1. Data are needed to formulate a statistical model. 2. Data are needed to evaluate conformance to standards. 3. Data are needed to measure performance of an ongoing production process. 4. Data are needed to provide input to a study. Question 4 A catalog company that receives the majority of its orders by telephone conducted a study to determine how long customers were willing to wait on hold before ordering a product. The length of time was found to be a random variable best approximated by an exponential distribution with a mean equal to 3...

Words: 10229 - Pages: 41

...SOC 300 MIDTERM EXAM PART 2 A+ Graded Tutorial Available At: http://hwsoloutions.com/?product=soc-300-midterm-exam-part-2 Visit Our website: http://hwsoloutions.com/ Product Description PRODUCT DESCRIPTION SOC 300 MIDTERM EXAM PART 2, SOC 300 MIDTERM EXAM, Question 1 5 out of 5 points Correct Which of the following statements explains why decreasing fertility rates may help raise incomes in less developed countries? Answer Question 2 0 out of 5 points Incorrect Why is it so difficult for the poorest societies to get to a foothold on the development ladder? Answer Question 3 5 out of 5 points Correct What region of the world contained the highest number of the world’s extremely and moderately poor citizens in 2001? Answer Selected Answer: Question 4 5 out of 5 points Correct Of the nearly one million Malawians infected with AIDS, how many people have been receiving a successful AIDS medication that’s available for just $1 per day? Answer Question 5 5 out of 5 points Correct China’s economic reversal of fortune can be attributed to? Answer Question 6 0 out of 5 points Incorrect Which of the following statements about the World Health Organization’s drinking-water and sanitation campaign is NOT true? Answer Question 7 5 out of 5 points Correct Why is economic growth by itself, not a sufficient objective of development? Answer Question 8 5 out of 5 points Correct What is the difference between “culmination outcomes” and......

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...vBUSN 278 Midterm Exam 2 Purchase here http://devrycourse.com/BUSN%20278/busn-278-midterm-exam-2 Product Description BUSN 278 Midterm Exam 2 1. (TCO 1) The type of budget that is updated on a regular basis is known as a ________________ 2. (TCO 2) The quantitative forecasting method that uses actual sales from recent time periods to predict future sales assuming that the closest time period is a more accurate predictor of future sales is: 3. (TCO 3) The regression statistic that measures how many standard errors the coefficient is from zero is the ________________ 4. (TCO 4) Capital expenditures are incurred for all of the following reasons except: 5. (TCO 5) Which of the following is not true when ranking proposals using zero-base budgeting? 6. (TCO 6) Which of the following ignores the time value of money? 7. (TCO 1) There are several approaches that may be used to develop the budget. Managers typically prefer an approach known as participative budgeting. Discuss this form of budgeting and identify its advantages and disadvantages. 8. (TCO 2) There are a variety of forecasting techniques that a company may use. Identify and discuss the three main quantitative approaches used for time series forecasting models. 9. (TCO 2) The Federal Election Commission maintains data showing the voting age population, the number of registered voters, and the turnout for federal elections. The following table shows the national voter turnout as a percentage of the......

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...BUSN 278 Midterm Exam 2 Purchase here http://devrycourse.com/BUSN%20278/busn-278-midterm-exam-2 Product Description BUSN 278 Midterm Exam 2 1. (TCO 1) The type of budget that is updated on a regular basis is known as a ________________ 2. (TCO 2) The quantitative forecasting method that uses actual sales from recent time periods to predict future sales assuming that the closest time period is a more accurate predictor of future sales is: 3. (TCO 3) The regression statistic that measures how many standard errors the coefficient is from zero is the ________________ 4. (TCO 4) Capital expenditures are incurred for all of the following reasons except: 5. (TCO 5) Which of the following is not true when ranking proposals using zero-base budgeting? 6. (TCO 6) Which of the following ignores the time value of money? 7. (TCO 1) There are several approaches that may be used to develop the budget. Managers typically prefer an approach known as participative budgeting. Discuss this form of budgeting and identify its advantages and disadvantages. 8. (TCO 2) There are a variety of forecasting techniques that a company may use. Identify and discuss the three main quantitative approaches used for time series forecasting models. 9. (TCO 2) The Federal Election Commission maintains data showing the voting age population, the number of registered voters, and the turnout for federal elections. The following table shows the national voter turnout as a percentage of the......

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...BUSN 278 MIDTERM EXAM 2 To purchase this visit following link: http://www.activitymode.com/product/busn-278-midterm-exam-2/ Contact us at: SUPPORT@ACTIVITYMODE.COM BUSN 278 MIDTERM EXAM 2 BUSN 278 Midterm Exam 2 BUSN 278 Midterm Exam 2 1. (TCO 1) The type of budget that is updated on a regular basis is known as a ________________ 2. (TCO 2) The quantitative forecasting method that uses actual sales from recent time periods to predict future sales assuming that the closest time period is a more accurate predictor of future sales is: 3. (TCO 3) The regression statistic that measures how many standard errors the coefficient is from zero is the ________________ 4. (TCO 4) Capital expenditures are incurred for all of the following reasons except: 5. (TCO 5) Which of the following is not true when ranking proposals using zero-base budgeting? 6. (TCO 6) Which of the following ignores the time value of money? 7. (TCO 1) There are several approaches that may be used to develop the budget. Managers typically prefer an approach known as participative budgeting. Discuss this form of budgeting and identify its advantages and disadvantages. 8. (TCO 2) There are a variety of forecasting techniques that a company may use. Identify and discuss the three main quantitative approaches used for time series forecasting models. 9. (TCO 2) The Federal Election Commission maintains data showing the voting age population, the number of registered voters, and the turnout for federal......

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...HSA 515 MIDTERM EXAM PART 1 AND 2 To purchase this visit following link: http://www.activitymode.com/product/hsa-515-midterm-exam-part-1-and-2/ Contact us at: SUPPORT@ACTIVITYMODE.COM HSA 515 MIDTERM EXAM PART 1 AND 2 Part:1 Course: Health Care Policy, Law And Et Test: Week 5 Midterm Exam Part 1 Attempt Score: 125 out of 125 points Time Elapsed 28 minutes out of 2 hours. Instructions: This midterm exam consists of 25 multiple choice questions and covers the material in Chapters 1 through 3. Question 1 5 out of 5 points The person often referred to as the first hospital administrator Question 2 5 out of 5 points Reform in medical education early in the 20th century was due to Question 3 5 out of 5 points The inventor of the electrocardiograph, which marked the beginning of medicine in the 20th century Question 4 5 out of 5 points The first incorporated hospital in the U.S. was founded in Question 5 5 out of 5 points The person who claimed that the alarming number of deaths from puerperal fever was due to infection transmitted by students who came directly from the dissecting room to take care of maternity patients Question 6 5 out of 5 points With the goal of providing the best professional, scientific and humanitarian care possible, the focus of efforts in hospital standardization was the Question 7 5 out of 5 points HSA 515 MIDTERM EXAM PART 1 AND 2 To purchase this visit following......

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...BUSN602 Midterm Exam Set 2 Click Link Below To Buy: http://hwcampus.com/shop/busn602-midterm-exam-2/ Return to Assessment List Part 1 of 1 - 100.0 Points Question 1 of 20 5.0 Points Jill Clinton puts $1,000 in a savings passbook that pays 4% compounded quarterly. How much will she have in her account after five years? A.$1,200.50 B.$1,220.20 C.$1,174.80 D.$1,217.50 Question 2 of 20 5.0 Points An increase in inflation should: A.increase the demand for loanable funds B.decrease the interest rate on loans C.increase the interest rate on loans D.none of the above Question 3 of 20 5.0 Points Economists use a ___________________ framework to explain how the prices and quantities of goods and services are determined in a free-market economic system. A.opportunity B.marginal cost C.supply-and-demand D.anti-monopoly E.none of the above Question 4 of 20 5.0 Points The future value of $100 received today and deposited at 6 percent for four years is A.$126. B.$ 79. C.$124. D.$116. Question 5 of 20 5.0 Points All of the following are important components of a financial system except: A.government and private policy makers B.a monetary system C.the international monetary fund D.financial institutions and markets Question 6 of 20 5.0 Points In general, the......

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...time • Listening quietly when your boss is speaking Question 2 What is the sociological definition of significant others? • Specific people important in a child’s life who have the greatest impact on their self-evaluation • Relationships characterized by intense emotional ties, face-to-face interaction, intimacy, and a strong, enduring sense of commitment • Those whose opinions provide the basis for how we judge our own attitudes or behaviors • People of similar age and social standing that influence our norms and values Question 3 The study of social interaction as if it were governed by the norms of theatrical performance is referred to as: • Presentation of self • Theatrical socialization • Dramaturgical approach • Shakespearean social interaction Question 4 The unspoken classroom socialization to the norms, values, and roles of a culture that school provides is referred to as: • Textbook socialization • Socialization curriculum • Curriculum of inequality • Hidden curriculum Question 5 Which of the following behaviors is most likely the result of family socialization? • Texting and holding a face-to-face conversation at the same time • Standing during the playing of the national anthem • Arriving to an important appointment 15 minutes early • Performing specific household chores Want SOC 100 midterm exam part 2 answer download now SOC 100 Midterm Exam Part 2 Question 6 Adopting the behavior or standards of a group you......

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...BUSN602 Midterm Exam Set 2 Click Link Below To Buy: http://hwcampus.com/shop/busn602-midterm-exam-2/ Return to Assessment List Part 1 of 1 - 100.0 Points Question 1 of 20 5.0 Points Jill Clinton puts $1,000 in a savings passbook that pays 4% compounded quarterly. How much will she have in her account after five years? A.$1,200.50 B.$1,220.20 C.$1,174.80 D.$1,217.50 Question 2 of 20 5.0 Points An increase in inflation should: A.increase the demand for loanable funds B.decrease the interest rate on loans C.increase the interest rate on loans D.none of the above Question 3 of 20 5.0 Points Economists use a ___________________ framework to explain how the prices and quantities of goods and services are determined in a free-market economic system. A.opportunity B.marginal cost C.supply-and-demand D.anti-monopoly E.none of the above Question 4 of 20 5.0 Points The future value of $100 received today and deposited at 6 percent for four years is A.$126. B.$ 79. C.$124. D.$116. Question 5 of 20 5.0 Points All of the following are important components of a financial system except: A.government and private policy makers B.a monetary system C.the international monetary fund D.financial institutions and markets Question 6 of 20 5.0 Points In general, the......

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...BUSN 278 MIDTERM EXAM 2 TO purchase this tutorial visit following link: http://wiseamerican.us/product/busn-278-midterm-exam-2/ Contact us at: SUPPORT@WISEAMERICAN.US BUSN 278 MIDTERM EXAM 2 1. (TCO 1) The type of budget that is updated on a regular basis is known as a ________________ 2. (TCO 2) The quantitative forecasting method that uses actual sales from recent time periods to predict future sales assuming that the closest time period is a more accurate predictor of future sales is: 3. (TCO 3) The regression statistic that measures how many standard errors the coefficient is from zero is the ________________ 4. (TCO 4) Capital expenditures are incurred for all of the following reasons except: 5. (TCO 5) Which of the following is not true when ranking proposals using zero-base budgeting? 6. (TCO 6) Which of the following ignores the time value of money? 7. (TCO 1) There are several approaches that may be used to develop the budget. Managers typically prefer an approach known as participative budgeting. Discuss this form of budgeting and identify its advantages and disadvantages. 8. (TCO 2) There are a variety of forecasting techniques that a company may use. Identify and discuss the three main quantitative approaches used for time series forecasting models. 9. (TCO 2) The Federal Election Commission maintains data showing the voting age population, the number of registered voters, and the turnout for federal elections. The following table shows the national......

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