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Quantative Analysis of Data

Calculating Negative Predictive Value (Statistics)

Modify Acron's model (Excel filed attached) so that development lasts for an extra year. Specifically, assume that development costs of $7.2 million and $2.1 million are incurred at the beginnings of years 1 and 2, and then the sales in the current model occur one year later, that is from year two until year 21. Again, calculate

Solving Statistic Problems

(See attached file for full problem description with diagrams) 14. The following chart shows the selling price ($000) of houses sold in the Billings, Montana, area. a. How many homes were studied? b. What is the class interval? c. One hundred homes sold for less than what amount? d. About 75 percent of the homes sold fo

To find mean and standard deviation of distribution

Three tables listed below show "random variables" and their " probabilities. However, only one of these is actually a probability distribution. A) What is it? Table 1 Table 2 Table 3 X P(X) X P(X) X P(X) 5 .3 5 .1

Statistics: Calculate the weighted mean for semester grades

Assume a student received the following grades for the semester: History, B; Statistics, A; Spanish, C; and English, C. History and English are 5 credit hour courses, Statistics a 4 credit hour course and Spanish a 3 credit hour course. If 4 grade points are assigned for an A, 3 for a B and 2 for a C, what is the weighted mean f

Value Statistics Results

Company Symbol Weight Close $ 3M Co. MMM 10.4312 125.72 Alcoa Inc. AA 1.8262 22.01 Altria Group Inc. MO 2.7298 32.90 American Express Co. AXP 3.0741 37.05 AT&T Corp. T 1.3715 16.53 Boeing Co. BA 2.2925 27.63 Caterpillar Inc. CAT 4.3768 52.75 Citigroup Inc. C 3.2508 39.18 Coca-Cola Co. KO 3.3114 39.91 E.I. DuPont de Nem

Assignment Stumper

I have a problem in my textbook and already know the answers (the answers to every question are listed at the end of the text); however, I can't for the life of me figure out the steps in the process to solve this one. It looks simple enough (it's a simple assignment problem), but I'm stumped. The quantitative methods depar


A metal stamping machine is used to form key blanks that will eventually be machined with different combinations of grooves and teeth to become finished keys for automobile door locks. Every 15 minutes a subgroup of 5 key blanks is taken, and the length of each key is measured. The table attached shows these measurements (in inc

Computers in School: Article

Please provided comments/insights on this article/report: The title: "When Computers Go to School: How Kent School Implemented Information Technology to Enrich Teaching and Learning" by: Phillip D. Devin ( If you type the title on the search button it will come up.


I am doing a paper on Descriptive Statistics and its on Baseball players salaries. Can you tell me what these means: 1.Calculate the measures of central tendency and dispersion. (can you simplify this for me and give me an example) it will help me to stay on the right track. 2. Display your descriptive statistical da

I need HELP answering questions on DESCRIPTIVE STATISTICS

Hi, I need your HELP with my research paper on the salary of the baseball players. these are the questions I need HELP with: 1.Examing the measures of central tendency. 2. Display the discriptive statistical data using graphic and tabular techniques. 3. Which measures are the most appropriate from which to draw conc

Random Stats questions

The production manager for the Whoppy soft drink company is considering the production of 2 kinds of soft drinks: regular and diet. The company operates one "8 hour" shift per day. Therefore, the production time is 480 minutes per day. During the production process, one of the main ingredients, syrup is limited to maximum produ

Question about Research Terminology- Match Definitions with Terms

DEFINITIONS: 1. a research study done over a period of time. 2. To use focus groups or small studies to get a "feel" for the problem _______. 3. It means in name only. Used on surveys to identify the population being sampled_____> 4. Using basic research methods, the outome of the research is applied to a business problem.

Quantitative Methods and Linear Programming

Please refer to the attached file for instructions. Thanks! --- #3: Given a transportation problem with the following costs, supply, and demand, find the optimal solution using the computer. To From 1 2 3 Supply A $6 $7 $4 100 B 5 3 6 180 C 8 5 7 200 DEMAND 135 175 170 #7: Steel mill

Integer Programming Model: Pottery Problem

Helen Homes makes pottery by hand in her basement. She has 20 hours available each week to make bowls and vases. A bowl requires 3 hours of labor, and a vase requires 2 hours of labor. It requires 2 pounds of special clay to make a bowl and 5 pounds to produce a vase; she is able to acquire 35 pounds of clay per week. She sells

Quantitative Methods Exercises

Problem #5: The Southern Sporting Goods Company makes basketballs and footballs. Each product is produced from two resources - rubber and leather. The resource requirements for each product and the total resources available are as follows. Resource Requirements per unit Product Rubber (lb) Leather ( ft2 ) Basket

Quantitative Methods

A jewelry store makes necklaces and bracelets from gold and platinum. The store has 18 ounces of gold and 20 ounces of platinum. Each necklace requires 3 ounces of gold and 2 ounces of platinum, whereas each bracelet requires 2 ounces of gold and 4 ounces of platinum. The demand for bracelets is no more than 4. A necklace ea

Variability, with range, standard deviation, and cariance

1. Calculate SS, variance, and standard deviation for the following sample: 4, 7, 3, 1, 5 2. Find the range for the following population of scores: 3, 4, 4, 1, 7, 3, 2, 6, 4, 2 1, 6, 3, 4, 5, 2, 5, 4, 3, 4 3. Construct a frequency distribution table for the following sample data. Calculate the mean, sum of s

Calculating mean, critical t-value, sample size

1. A local bank needed information concerning the checking account balances of its customers. A random sample of 15 accounts was checked. The mean balance was $686.75 with a standard deviation of $256.20. Find a 98% confidence interval for the true mean. Assume that the account balances are normally distributed. 2. Find t

This problems is about Mean, Median, Mode, Range, and Standard Deviation

Using the following data points (6, 6, 8, 12, 11, 9, 6, 7, 8, 10), create a situational context for the data (for example: the data points represents the number of miles I jogged during my last 10 workouts or the number of applicants that successfully passed the call center simulation to get a face-to-face interview, from Feb 1

Unbiased Estimator of Teta

Let X1, X2, X3......Xn represent a random sample from the Rayleigh distribution with destiny function given exercise 15. Determine: a) The maximum likelihood estimator of theta and then calculate the estimate the vibratory stress data gven in the exercise. Is this estimator the same as the unbiased estimator suggested in Ex

Inferences and Assumptions

An experiment was conducted to compare the effects of two teaching styles for grade 12 mathematics. The individuals in experiment were grade 12 math students from one particular high school. The students were randomly assigned of the two treatment groups. After 3 week course all students took an identical standardized exam. The

Median and Percentile

Kevin Horn is the national sales manager for National Textbooks, Inc. He has a sales staff of 40 who visit college professors all over the United States. Each Saturday morning he requires his sales staff to send him a report. This report includes, among other things, the number of professors visited during the previous week. Lis

Rate of Return Problem

18.) Portfolio Analysis. Use the data in the previous problem and consider a portfolio with weights of .60 in stocks and .40 in bonds. a.) What is the rate of return on the portfolio in each scenario? b.) What is the expected rate of return and standard deviation of the portfolio? c.) Would you prefer to invest in the por

RHI Management Resources

RHI Management resources conducted a survey of 1400 chief financial officers. When asked how much an impact interest rates have on the purchasing decisions they make for their company, 672 reported that they have little or no impact, 700 financial officers stated that interest rates have a significant impact or somewhat signifi

Job Satisfaction of Employees

The data set for our course is available via the following link DataSet and contains the following eight sections of data that will be used throughout our course: (1) Gender (2) Age (3) Department (4) Position (5) Tenure (6) Overall Job Satisfaction (7) Intrinsic Job Satisfaction - Satisfaction with the actual performance of

Statistics of Weekly Overtime Hours

The weekly overtime hours worked by all the employees at the Publix Market are: 1, 4, 6, 12, 5, and 2. a. Is this a sample or a population? b. What is the mean number of overtime hours worked? c. What is the median? Interpret. d. What is the mode? e. What is the mean deviation? f. What is the standard deviation? g. What i

Confidence levels for Bradford Electric Illuminating Company

(See attached file for full problem description) --- The Bradford Electric Illuminating Company is studying the relationship between kilowatthours (thousands) used and the number of rooms in a private single-family residence. A random sample of 10 homes yielded the following. Number of Kil

Scientific Instrument Company

1. The precision Scientific Instrument Company manufactures thermometers that are supposed to give reading of 0 Celsius at the freezing point of water. The tests on a large sample of theses thermometers reveal that at the freezing point of water, some give reading below 0 Celsius. Assume that the mean reading in 0 Celsius and th

SPSS and Numeric Codes

Enter the following dataset into SPSS. Create numeric codes for the nominal variables, then use "values" to show the meaning of the numbers: ID Age Jog_YN Weight Take_Vit 1 20 N 180 Y 2 30 N 150 N 3 33 N 175 N 4 40 N 163 N 5 41 N 190