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MATH 533 Week 7 Quiz
1. Question 12.3.4.T: Suppose you fit the first-order multiple regression model y = β0 β1x1 β2x2 Ԑ to n = 25 data points and obtain the prediction equation ŷ = -50.11 5.44x1 1.33x2. The estimated standard deviations of the sampling distributions of β1 and β2 are 0.98 and 0.25 respectively. 2. Question 12.3.13: Researchers developed a safety performance function (SPF), which estimates the probability of occurrence of a crash for a given segment of roadway. Using data on over 10...
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1. Question 12.3.4.T: Suppose you fit the first-order multiple regression model y = β0 β1x1 β2x2 Ԑ to n = 25 data points and obtain the prediction equation ŷ = -50.11 5.44x1 1.33x2. The estimated standard deviations of the sampling distributions of β1 and β2 are 0.98 and 0.25 respectively. 2. Question 12.3.13: Researchers developed a safety performance function (SPF), which estimates the probability of occurrence of a crash for a given segment of roadway. Using data on over 10...
MATH 533 Week 6 Quiz
Simple Linear Regression Question: From MSL, open data in Excel, then copy x and y variables into correct columns.
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Simple Linear Regression Question: From MSL, open data in Excel, then copy x and y variables into correct columns.
MATH 533 Week 5 Quiz
1. Question 7.4.45-T: A professor at a local university conducted a survey of 135 business in a city to determine what motivates small business to export their products. The CEOs were asked to respond to the statement “Management believes that the business can achieve economics of scale be exporting” on a scale of 1 (strongly disagree) to 5 (strongly agree. Summary statistics for the n = 135 scale scores were reported as x̄ = 3.81 and s = 1.4. in this study, the professor hypothesized that ...
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1. Question 7.4.45-T: A professor at a local university conducted a survey of 135 business in a city to determine what motivates small business to export their products. The CEOs were asked to respond to the statement “Management believes that the business can achieve economics of scale be exporting” on a scale of 1 (strongly disagree) to 5 (strongly agree. Summary statistics for the n = 135 scale scores were reported as x̄ = 3.81 and s = 1.4. in this study, the professor hypothesized that ...
MATH 533 Week 4 Quiz
1. Question 6.2.4: A random sample of 89 observations produced a mean x̄ = 25.7 and a standard deviation s = 2.5. 2. Question 6.5.67: A company wants to test a randomly selected sample of n water specimens and estimate the mean daily rate of pollution produced by a mining operation. If the company wants a 95% confidence interval estimate with a margin of error of 1.6 milligrams per liter (mg/L), how many water specimens are required in the sample? Assume prior knowledge indicates that pollution...
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1. Question 6.2.4: A random sample of 89 observations produced a mean x̄ = 25.7 and a standard deviation s = 2.5. 2. Question 6.5.67: A company wants to test a randomly selected sample of n water specimens and estimate the mean daily rate of pollution produced by a mining operation. If the company wants a 95% confidence interval estimate with a margin of error of 1.6 milligrams per liter (mg/L), how many water specimens are required in the sample? Assume prior knowledge indicates that pollution...
MATH 533 Week 1 Quiz
1. Question: 1.1.13 Suppose you’re given a data set that classifies each of simple unit into one of four categories. A, B, C or D. you plan to create a computer database consisting of these data and you decide to code the data as A = 1, B = 2, C = 3, and D = 4. Are the data consisting of the classifications A, B, C, and D qualitative or quantitative? After the data are input 1, 2, 3, and 4 are they qualitative or quantitative? 2. Question: 1.1.21 A company tracked all credit card purchases dur...
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1. Question: 1.1.13 Suppose you’re given a data set that classifies each of simple unit into one of four categories. A, B, C or D. you plan to create a computer database consisting of these data and you decide to code the data as A = 1, B = 2, C = 3, and D = 4. Are the data consisting of the classifications A, B, C, and D qualitative or quantitative? After the data are input 1, 2, 3, and 4 are they qualitative or quantitative? 2. Question: 1.1.21 A company tracked all credit card purchases dur...
MATH 225N Week 6 Quiz
1. Question: A statistics professor recently graded final exams for students in her introductory statistics course. In a review of her grading, she found the mean score out of 100 points was a x¯=77, with a margin of error of 10……Construct a confidence interval for the mean score (out of 100 points) on the final exam. 2. Question: A random sample of adults were asked whether they prefer reading an e-book over a printed book. The survey resulted in a sample proportion of p′=0.14, with a sa...
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1. Question: A statistics professor recently graded final exams for students in her introductory statistics course. In a review of her grading, she found the mean score out of 100 points was a x¯=77, with a margin of error of 10……Construct a confidence interval for the mean score (out of 100 points) on the final exam. 2. Question: A random sample of adults were asked whether they prefer reading an e-book over a printed book. The survey resulted in a sample proportion of p′=0.14, with a sa...
MATH 225N Week 4 Quiz
1. Question: Alice sells boxes of candy at the baseball game and wants to know the mean number of boxes she sells. The numbers for the games so far are listed below……. 16,14,14,21,15 2. Question: Given the following list of prices (in thousands of dollars) of randomly selected trucks at a car dealership, find the median…… 20,46,19,14,42,26,33 3. Question: Each person in a group shuffles a deck of cards and keeps selecting a card until a queen appears. Find the mode of the following num...
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1. Question: Alice sells boxes of candy at the baseball game and wants to know the mean number of boxes she sells. The numbers for the games so far are listed below……. 16,14,14,21,15 2. Question: Given the following list of prices (in thousands of dollars) of randomly selected trucks at a car dealership, find the median…… 20,46,19,14,42,26,33 3. Question: Each person in a group shuffles a deck of cards and keeps selecting a card until a queen appears. Find the mode of the following num...
Math 225N Week 2 Quiz
1. Question: A company has developed a wristband for monitoring blood sugar levels without requiring direct blood samples. It is interested in demonstrating the accuracy of the device for governmental approval and has decided to test the claim "The glucose level reported by the wristband is within 10% of a standard blood test result." Which of the following data collection processes would be appropriate? Select only one answer choice. 2. Question: A farmer divided his piece of land into 4 equi...
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1. Question: A company has developed a wristband for monitoring blood sugar levels without requiring direct blood samples. It is interested in demonstrating the accuracy of the device for governmental approval and has decided to test the claim "The glucose level reported by the wristband is within 10% of a standard blood test result." Which of the following data collection processes would be appropriate? Select only one answer choice. 2. Question: A farmer divided his piece of land into 4 equi...
MATH 533 Week 3 Quiz
1. Question: The ages of a group of 50 women are approximately normally distributed with a mean of 47 years and a standard deviation of 6 years. One woman is randomly selected from the group, and her age is observed. 2. Question: Almost all companies utilize some type of year-end performance review for their employees. Human Resource (HR) at a university Health Science Center provides guidelines for supervisors rating their subordinates. For example, raters are advised to examine their ratings f...
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1. Question: The ages of a group of 50 women are approximately normally distributed with a mean of 47 years and a standard deviation of 6 years. One woman is randomly selected from the group, and her age is observed. 2. Question: Almost all companies utilize some type of year-end performance review for their employees. Human Resource (HR) at a university Health Science Center provides guidelines for supervisors rating their subordinates. For example, raters are advised to examine their ratings f...
MGMT 404 Week 7 Quiz
1. Question: (TCO 4) An example of bottom up estimating would be: 2. Question: (TCO 6) You are the project manager of a major IT project in Italy. You review your earned value report and you see that your SPI is .68. What does this mean to you? 3. Question: (TCO 4) Which of the below is an example of a fixed cost to a project? 4. Question: (TCO 7) Which of the following is an example of a formal written form of communication? 5. Question: (TCO 8) What document provides the project manager with i...
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1. Question: (TCO 4) An example of bottom up estimating would be: 2. Question: (TCO 6) You are the project manager of a major IT project in Italy. You review your earned value report and you see that your SPI is .68. What does this mean to you? 3. Question: (TCO 4) Which of the below is an example of a fixed cost to a project? 4. Question: (TCO 7) Which of the following is an example of a formal written form of communication? 5. Question: (TCO 8) What document provides the project manager with i...
MATH 225N Week 6 Quiz
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MATH 225N Week 4 Quiz
Math 225N Week 2 Quiz
Math 225N Week 2 Quiz
HSM 543 Week 8 Final Exam Spring 2019