Math534 Study guides, Class notes & Summaries
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MATH 534 Week 6 Homework Problems
- Other • 6 pages • 2023
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MATH 534 Week 1 Discussion; Study and Sample Design
- Other • 74 pages • 2023
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A company makes men's button-up dress shirts and is considering changes to itsdesign.Howmightthecompanygoaboutfindingagoodsampleofindividuals?Thesedecisions would include method of sampling, location of sampling, population toconsider,and numberin sample,inaddition toanyotherconsiderations.
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MATH 534 Week 1 Quiz
- Exam (elaborations) • 8 pages • 2023
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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...
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MATH 534 Week 4 Homework Problems
- Other • 7 pages • 2023
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1.	Question: A random sample of 100 selected from a population with a standard deviation of 10 yielded a mean = 225. The mean and the standard deviation of the distribution of the sample means are __________. 
2.	Question: Suppose a random sample of 49 is selected from a population of size N = 500 with a standard deviation of 14. If the sample mean is 125, the 99% confidence interval to estimate the population mean is between ____________. 
3.	Question: A manufacturer wants to purchase a certain...
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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.
Too much month left at the end of the money?
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MATH 534 Week 6 Quiz
- Exam (elaborations) • 3 pages • 2023
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1.	Question: A value of -1 for the coefficient of correlation between two variables means that the two variables are _____________. 
2.	Question: If there is positive correlation between two sets of numbers, then ____________-. 
3.	Question: If the correlation coefficient between variables X and Y is roughly zero, then ___________. 
4.	Question: Determine the Pearson product-moment correlation coefficient for the following data. 
5.	Question: A quality manager is developing a regression model to...
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MATH 534 Week 6 Course Project, Part B - Hypothesis Testing and Confidence Intervals
- Other • 7 pages • 2023
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Part B: Hypothesis Testing and ConfidenceIntervals	 
Completethefollowingfourhypotheses,usingα=0.05foreach.Theweek5spreadsheetcanbeusedintheseanalyses. 
 
▪	1.Meansalesperweekexceed42.5persalesperson 
▪	2.Proportionreceivingonlinetrainingislessthan 55% 
▪	3Meancallsmadeamongthosewithnotraining isatleast 145 
▪	4.Meantime percallis14.7minutes 
 
•		Using the same data set from part A, perform the hypothesis test for each speculation inordertoseeifthereisevidencetosupportthemanager's...
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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. 
•	...
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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...
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MATH 534 Week 4 Quiz
- Exam (elaborations) • 8 pages • 2023
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1.	Question: Suppose a random sample of 400 is selected from a population with a standard deviation of 5. If the sample mean is 25, the 98% confidence interval to estimate the population mean is between ________. 
2.	Question: The point estimate of the population mean is _________. 
3.	Question: Suppose a random sample of 50 is drawn from a population whose standard deviation is unknown. If the sample mean is 70 and the sample standard deviation is 5, the 92% confidence interval to estimate the ...
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