Explore BrainMass

Descriptive Statistics

Develop and Define a Model for the Total Amount of Money

Develop a model that will determine the total amount of money you will have in the account at: The end of first year; If you deposit $5000 in a saving account that pays 3% annual interest. (Also, define all of the model components).

Simplex Procedure

See the attached file. The Dreskin Development Company is building two apartment complexes. It must decide how many units to construct in each complex subject to labor and material constraints. The profit generated for each apartment in the first complex is estimated at $900, for each apartment in the second complex, $1,500.

Simplex method for profits at the Roller Products Company

The Roller Products Company produces roller skates and skateboards. It has three production lines. Production line 1 makes skateboard platforms. Production line 2 makes skate assemblies. Production line 3 mounts wheels on both products. The marketing department has determined virtually unlimited demand for both products. Profit

Statistics - Descriptive Summary measures

4.21,5.55,3.02,5.13,4.77,2.34,3.54,3.20,4.50,6.10,.38,5.12,6.46,6.19,3.79,15.08 a. What descriptive summary measures would you use to present the data. which measure is the best to use and which is the worse and why? b. What conclusion can you draw about the data.

Slope of the Equation Line

(a) Make a scatter plot of the data. What does it suggest about the correlation between X and Y? (b) Use Excel, MegaStat, or MINITAB to calculate the correlation coefficient. Also calculate the slope of the equation line. 12.4 Moviegoer Spending ($) on Snacks Movies Age (X) Spent (Y) 30 2.85 50 6.50 34 1.50 12

Solving Descriptive and Inferential Statistics

1. Suppose we collected data from each person in the class on the number of years since their last math class and their anticipated grade for this statistics class. Determine whether descriptive or inferential statistics would be used to answer each of these research questions: a. What is the average number of years since th

Inferential Statistics

. Individual Assignment: Inferential Statistics · Access the University of Phoenix Material, "Data for Inferential Practice Problems." Continue using the information from Inferential Practice Problems Part I and determine the following using the Excel® Analysis ToolPak? when necessary: · Calculate all

Plot the Data on U.S. General Aviation

Plot the data on U.S. general aviation shipments (b) Describe the patterns and discuss possible causes.(c) Would a fitted trend be helpful? Explain. (d) Make a similar graph for 1992-2003 only. Would a fitted trend be helpful in making a prediction for 2004? (e) Fit a trend model of your choice to the 1992-2--3 data (f) make a f

Must using Excel Solver and Scenario Manager

It is the new season of the "Masterchef Australia" 2 TV programme. In the grand opening of the first episode, audiences are presented with a one-time-in-history-only re-match cooking bout between Julie (last season's winner) and Poh (the runner up). This time however, both contestants cook for a buffet (i.e. cook in bulk) as


# 16 A random sample of the number of farms (in thousands) in various states follows. Estimate the mean of farms per state with 90% confidence. 47 95 54 33 64 4 8 57 9 80 8 90 3 49 4 44 79 80 48 16 68 7 15 21 52 6 78 109 40 50 29 Answer - #24 A pizza shop o

Statistic 1. For each case below, choose the most appropriate statistical procedure... 2. Identify the scale of measurement in each of the following ... 3. For the following set of scores, prepare a frequency distribution, a histogram, and a stem-and-leaf display ... (File attached)

1. For each case below, choose the most appropriate statistical procedure: a. A teacher of a low-level reading group is interested in what the average score is for the group of 25 students. b. An administrator wants to find out if there is a relationship between teacher absences and student achievement. c. A math teacher want

Qualitative/Quantitative Data

Details: The data set for our course is a sample of a survey conducted on the population of the American Intellectual Union (AIU). It is available via the following link: DataSet with DataSet Key which contains the following nine sections of data that will be used throughout our course: (1) Gender (2) Age (3) Department (4) Po

Number of Units Required

Fixed costs per day are $20, the variable costs $0.16. Selling price $1.50. Generate a net income of $100 or greater? Using the formula where NI = net income, U = units sold, P = price per unit, VCu = variable costs per unit, and FC = fixed costs.

Literature Review and Plagiarism

What are common practices in writing literature reviews to avoid because they are forms of plagiarism? What should be done instead? How would you organize your literature before writing a lit review?

Mean - Deviation

3-21 The following is a set of data for a population with N=10; 7 5 11 8 3 6 2 1 9 8 a. compute the population mean b. compute the population standard deviation 3-37 The following is a set of data from a sample of n=11 items X 7 5 8 3 6 10 12 4 9 15 18 Y 21 15 24 9 18 30 36 12 27 45 54 a. Compute t

Samples and survey responses

Using AIU's large database of survey responses from the AIU data set, complete the following: Perform hypothesis testing on one variable's data. (Choose either the intrinsic or extrinsic column.) Perform a t-test by formulating a null and an alternative statement, choosing an acceptable significance value, determining the app

What are statistics?

Please see the attached document to answer questions I am having a hard time understanding. From attachment: 1. What are major quantitative design types? Name at least three types and provide a published example of a study for each type. 2. What different types of variables are used in quantitative studies? Describe ea

Response types to classify findings

O Collect your data. o Present your data in one of the four appropriate general response types (rating, ranking, categorization, or sorting). o Classify your findings in order of power (nominal, ordinal, interval, and ratio). Do not discuss your analysis at this time. ? Include an Excel® workbook containing your data.


A list of 52 employees is below. 1) please compute the mean, median, and standard deviation of the list of the 52 employees. 2) Use excel to choose a simple random sample of size 15 from this frame. 3) please compute the mean, medium, and standard deviation of the annual salaris for the 15 employees included in the si

Quantitative Reasoning for Population Declines

A small town is in a population decline. The town manager has discovered that the town's population is decreasing exponentially at 6% annually. Based on this trend, the town population has decided that if the population falls to 1,000 or less, they cannot pay the town manager's salary. A) If the 2003 population is 12,345 peo

Confidence Intervals for the Mean

Confidence Intervals for the Mean (Large Samples) Find the critical value zc necessary to form a confidence interval at the given level of confidence. (References: definition for level of confidence a. 95%= b. 75%=

Annual Cost of Busing Students to School

The Springdale School board has made the decision to close one its junior high schools (seventh and eight grades) at the end of the school year and reassign all of next year's students to one of the three remaining junior high schools. The school district for the closed school has been divided into five areas as shown in the ta

Transportation and Model Formulation

5. In the transportation problem on the next page, products are produced at plants in Locations A and B and shipped to warehouses in locations X, Y and Z. 5a. According to the model formulation, what is the capacity of Plant B? _________ 5b. According to the model formulation, what is the demand at warehouse Z? ________

PERT network, earliest and latest start time

1. Draw the PERT network, identify the earliest and latest start time for each activity and the amount of slack for non-critical activities Completion Immediate Earliest Latest Amount Activity Time Predecessor Start Start

Population growth model for Austin, TX

In 1990, the population of Austin, Texas, was 494,290. During the next 10 years, the population increased by about 3% each year. A. Write a model (equation) showing the population, P, in thousands of Austin t years after 1990. B. What was the population in 2000? Show your work. C. Estimate the year when the population

Statistics Charts

As the production manager for an electronic circuit company you have encountered the following situation. Part 1 A process for producing electronic circuits has achieved very high yield levels. An average of only 10 defective parts per million is currently produced. What are the upper and lower control limits for a samp