Course
MATH 534 Applied Managerial Statistics
MATH 534 Week 1 Homework Problems
MATH 534 Week 1 Discussion: Study and Sample Design
MATH 534 Week 2 Course Project Part A – Exploratory Data Analysis -Represents
MATH 534 Week 2 Homework Problems
MATH 534 Week 2 Discussion: Changing Probabilities.. Conditional Probabilities
MATH 534 Week 3 Homework Problems
MATH 534 Week 3 Discussion: Determining a Normal Distribution
MATH 534 Week 4 Homework Problems
M...

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# Archives

# [Answered] MATH 534 Week 8 Final Exam -100% Correct – Statistics -DeVry

Course
MATH 534 Applied Managerial Statistics
Week 8 Final Exam
Question: The following numbers represent the weights in pounds of six 7-year old children in Mrs. Jones’ second grade class (25, 60, 51, 47, 49, 45). Find the mean, median, mode, variance, and standard deviation.
Question: If the variance is 846, what is the standard deviation?
Question: If we have the following data: 34, 38, 22, 21, 29, 37, 40, 41, 22, 20, 49, 47, 20, 31, 34, 66. Draw a stem and leaf. Disc...

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# [Answered] MATH 534 Week 7 Discussion: Predictive Analytics -Regression

Course
MATH 534 Applied Managerial Statistics
Week 7 Discussion: Predictive Analytics
Predictive analytics in business is an important application of multiple regression analysis. Generally speaking, what is meant by predictive analytics? As a business owner, how could you use regression analysis and predictive analytics to increase your company's sales?
SOLUTION
Predictive analytics is a type of data analysis that uses statistical methods and modelling to make predictio...

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# [Answered] MATH 534 Week 7 Homework Problems -Statistics

Course
MATH 534 Applied Managerial Statistics
Week 7 Homework Problems
Question: A real estate analyst has … a multiple regression line, y = 60+ 0.068 x1 – 2.5 x2, to predict y = the market price of a home (in $1,000s), using independent variables, x1 = the total number of square feet of living space, and x2 = the age of the house in years. The regression coefficient of x2 suggests this: _____.
Question: The following is a partial computer output of a multiple regression...

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# [Answered] MATH 534 Week 7 Part C: Regression and Correlation Analysis

Course
MATH 534 Applied Managerial Statistics
Week 7 Course Project Part C: Regression and Correlation Analysis
Final Project: Regression and Correlation Analysis
Use the dependent variable (labeled Y) and one of the independent variables (labeled X1, X2, and X3) in the data file. Select and use one independent variable throughout this analysis. Use Excel to perform the regression and correlation analysis to answer the following. The week 6 spreadsheet can … helpful in this w...

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# [Answered] MATH 534 Week 6 Discussion: Regression Analysis – IQ

Course
MATH 534 Applied Managerial Statistics
Week 6 Discussion: Regression Analysis
Suppose you are given data from a survey showing the IQ of each person interviewed and the IQ of his or her mother. That is all the information that you have. Your boss has asked you to put together a report showing the relationship between these two variables. What could you present, and why?
SOLUTION
I would use the Regression Analysis to determine the existence and nature of the relat...

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# [Answered] MATH 534 Week 6 Homework Problems – 100% Correct

Course
MATH 534 Applied Managerial Statistics
Week 6 Homework Problems
Question: Which of the following is not an assumption of the regression model?
Question: Suppose for a … data set the regression equation is: y = 54.78 + 1.45x, and the point (0.00, 24.78) is in the data set. The residual for this point is _________.
Question: If the standard error of the estimate for a regression model … to a large number of … observations is 1.75, approximately 68% of the residuals ...

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# [Answered] MATH 534 Week 6 Course Project Part B: Hypothesis Testing and Confidence Intervals

Course
MATH 534 Applied Managerial Statistics
Week 6 Course Project Part B: Hypothesis Testing and Confidence Intervals
Part B: Hypothesis Testing and Confidence Intervals
Complete the following four hypotheses, using α = 0.05 for each. The week 5 spreadsheet can … in these analyses.
1. Mean sales per week exceed 42.5 per salesperson
2. Proportion receiving online training is less than 55%
3 Mean calls made among those with no training is at least 145
4. Mean ti...

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# [Answered] MATH 534 Week 5 Discussion: Hypothesis Testing – Data

Course
MATH 534 Applied Managerial Statistics
Week 5 Discussion: Hypothesis Testing
For this discussion, create and post a 1-2 minute video describing a real-world example of when a hypothesis test could be used. Your video should also include a numerical example for another student to work through in their response. The example can use real data or data that you make up, such as values for the mean, standard deviation, and sample size. Be sure to note if the standard deviation ...

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# [Answered] MATH 534 Week 5 Homework Problems – 100% Correct

Course
MATH 534 Applied Managerial Statistics
Week 5 Homework Problems
Question: In hypothesis testing the statistical conclusion is either to reject or not to reject the null hypothesis … on the sample data. Which of the following statements is true?
Question: If a company wants to prove that the proportion (p) of its revenues from overseas operations is more than 18%, the null and alternate hypotheses are __________.
Question: A test of the hypotheses, H0: p = 0.18 and...

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