Math534 Study guides, Class notes & Summaries
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![MATH 534 Week 2 Course Project, Part A - Exploratory Data Analysis](/docpics/2266372/65f3045e89429_2266372_121_171.jpeg)
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MATH 534 Week 2 Course Project, Part A - Exploratory Data Analysis
- Other • 6 pages • 2023
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Introduction 
Your instructor will provide you with a data file that includes data on five variables: 
SALES represents the number sales made this week. 
CALLS represents the number of sales calls made this week. 
TIME represents the average time per call this week. 
YEARS represents years of experience in the call center. 
TYPE represents the type of training the employee received. 
Part A: Exploratory Data Analysis 
Preparation 
•	Open the files for the Course Project and the data set. 
•	...
![MATH 534 Week 3 Homework Problems](/docpics/63dd012766146_2332211.jpg)
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MATH 534 Week 3 Homework Problems
- Other • 12 pages • 2023
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1.	Question: Scores on a certain exam are normally distributed with a mean of 90 and a variance of 25. What is the z-value for a score of 80? 
2.	Question: Scores on a certain exam are normally distributed with a mean of 90 and a variance of 25. What is the probability of obtaining a score less than 80? 
3.	Question: Which one of the following is not a characteristic of a normal distribution? 
4.	Question: If the z-value of a given x value is positive, it means that ___________. 
5.	Question: As...
![MATH 534 Week 5 Quiz](/docpics/63d272552e824_2302892.jpg)
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MATH 534 Week 5 Quiz
- Exam (elaborations) • 9 pages • 2023
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1.	Question: In a hypothesis test, the test statistic computed from the sample data is considered extreme or significant if it is __________ 
2.	Question: A test of the hypotheses, H0: p = 0.18 and H1: p ≠ 0.18 is a _______________. 
3.	Question: An analyst tested the null hypothesis µ ≥ 30 against the alternative hypothesis that µ < 30. The analyst reported a p-value of 0.07. For what significance level of α will the null hypothesis would be rejected? 
4.	Question: The dean of a busi...
![MATH 534 Week 6 Homework Problems](/docpics/63c93b1905acc_2275251.jpg)
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MATH 534 Week 6 Homework Problems
- Exam (elaborations) • 5 pages • 2023
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![MATH 534 Week 7 Homework Problems](/docpics/63c93d3ee5e87_2275311.jpg)
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MATH 534 Week 7 Homework Problems
- Exam (elaborations) • 5 pages • 2023
- Available in package deal
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- $21.48
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1.	Question:Arealestateanalysthasdevelopedamultipleregressionline,y=60+0.068x1–2.5x2,topredicty=themarketpriceofahome(in 
$1,000s),usingindependentvariables,x1=thetotalnumberofsquare feetoflivingspace,andx2=theageofthehouseinyears.The regressioncoefficientofx2suggeststhis: _____. 
2.	Question:Thefollowingisapartialcomputeroutputofamultipleregressionanalysis of a data set containing 20 sets of observations on thedependentvariable. 
Theregressionequationis 
SALEPRIC=1470+0.8145LANDVAL+0.8204IMP...
![MATH 534 Week 1 Discussion; Study and Sample Design (Keller)](/docpics/63da1aa017141_2322598.jpg)
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MATH 534 Week 1 Discussion; Study and Sample Design (Keller)
- Other • 8 pages • 2023
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A company makes men's button-up dress shirts and is considering changes to its design. Howmight the company go about finding a good sample of individuals? These decisions wouldincludemethodofsampling,locationofsampling,populationtoconsider,andnumberinsample,in additionto any other considerations.
![MATH 534 Week 1 Quiz](/docpics/63db305d15d26_2326598.jpg)
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MATH 534 Week 1 Quiz
- Exam (elaborations) • 8 pages • 2023
- Available in package deal
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1.	Question: Classify each of the following as nominal, ordinal, interval, or ratio data. 
2.	Question: The activity or the process of collecting the data on the population is called . 
3.	Question: A company wants to learn the customers’ purchase habits of buying certain products. This company did a survey about a random 1000 customers, who were asked about the times they purchased the certain products within one month. Then what is the data in this example: 
4.	Question: Researchers often wi...
![MATH 534 Week 1 Discussion; Study and Sample Design (Keller)](/docpics/63c9533a1b1fe_2275582.jpg)
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MATH 534 Week 1 Discussion; Study and Sample Design (Keller)
- Other • 8 pages • 2023
- Available in package deal
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- $15.49
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A company makes men's button-up dress shirts and is considering changes to its design. Howmight the company go about finding a good sample of individuals? These decisions wouldincludemethodofsampling,locationofsampling,populationtoconsider,andnumberinsample,in additionto any other considerations.
![MATH 534 Week 8 Discussion](/docpics/63c93d73eec93_2275316.jpg)
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MATH 534 Week 8 Discussion
- Other • 3 pages • 2023
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The descriptive statistics summarize data from a sample, for example, demographicprofiles. Whenever there are several groups, it is useful to provide the descriptivestatistics by group and for the overall sample. This gives a visual impression of thecomparabilityofthe groupsin termoftheir baseline characteristics.Itis notnecessaryto report statistical tests and P-values in such a summary because the main concern isthe comparability of the participants (which reflects the sampling), not the popul...
![MATH 534 Week 7 Course Project, Final Part C; Regression and Correlation Analysis](/docpics/2275284/65f3046480711_2275284_121_171.jpeg)
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MATH 534 Week 7 Course Project, Final Part C; Regression and Correlation Analysis
- Other • 4 pages • 2023
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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 work. 
1.	Generate a scatterplot for the ... dependent variable (Y) and the ... independent variable (X), including the graph of t...
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