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Quantative Analysis of Data

Case Problem: Compensation for Sales Professionals

Case Problem: Compensation for Sales Professionals Suppose that a local chapter of sales professionals in the greater San Francisco area conducted a survey of its membership to study the relationship, if any, between the years of experience :low (1-10), medium (11-20 years), and high (21 or more years). A portion of the data

Skewing Normal Distributions

A researcher has determined that the distribution of annual salaries of NBA players is bell-shaped and symmetrical about the mean salary, do you think that introducing Michael Jordan's last annual salary of more than $30 million would skew this distribution? Explain why or why not. What would be the best measure of central tende

Standard Deviation and Investment

Please solve with the following problem. Provide step by step calculations with explanations. John is investing in the S&P 500. His expected return on the S&P 500 is 10% with a standard deviation of 4%. If John is investing $200,000, then what is the dollar range of returns that John can have with 90 percent confidence at th

Expected Returns

You have chosen biology as your college major because you would like to be a medical doctor. However, you find that the probability of being accepted into medical school is about 10 percent. If you are accepted into medical school, then your starting salary when you graduate will be $300,000 per year. However, if you are not acc

Introductory Statistics: Mean, Mode, Median and More

** Please see the attached file for the complete problem description ** 1) Calculate the mean, mode, median and standard deviation of the means. 2) How does this illustrate the central limit theorem? 3) What is the probability that the mean lies between 5 & 6? 4) What is the 95% confidence interval for the mean? 5) What i

Definitional formula given to find the derivative functions

Problem 1 Given y = f(x) = x2 + 2x +3 a) Use the definitional formula given below to find the derivative of the function. b) Find the value of the derivative at x = 3. Problem 2 Given, y = f(x) = 2 x3 - 3x2 + 4x +5 a) Use the Power function to find derivative of the function. b) Find the value of the derivative at x =

Issues finding the answers for a homework

Need help on how to solve some questions on my homework: 1. What type of graph can I use to recor the colors of students eyes? 2. In a pie graph displaying the number of pizzas sold one day, the number of pepperoni pizzas sold is represented by a 90° section. If there were 72 pizzas sold in total that day, how many were pepp

Descriptive Statistics: Mia Hamm Number of Goals Scored

Mia Hamm, who retired after the 2004 Olympics, is considered by some to be the most prolific player in international soccer. The following data represent the number of goals scored over her 18 year career. 0 0 0 4 10 1 10 10 19 9 18 20 13 13 2 7 8 13 a. Constr

For this assignment, you will apply descriptive statistics to analyze data appropriate for real estate business decisions. The Florida Pool Home Data Excel file contains data for 80 properties

1. Calculate the mean, median, range, and standard deviation of home price and size. 2. Assume that the price for home number 66 had been mistyped as 427.9 instead of 247.9. Would the value of each of these statistics increase, decrease, or remain the same? Mean. Median. Range. Standard deviation. 3. Calculate th

Multiple Regression - New Question

For the Hospital Labor Needs Case (data set HospLab), use the dependent variable Monthly Labor Hours Required, y, and only the following 2 independent variables: Monthly X-Ray Exposures, x1, and Monthly Occupied Bed Days, x2. a. Description/Point Estimates: Central Tendency: write out the multiple regression equati

MBA Level Statistics

See the attached files. Have issues making sure these are correct. Must be answered in Excel. 1. A branch of chain of large electronics stores is conducting an end-of-month inventory of the merchandise in stock. There were 1546 items in inventory at that time. A sample of 50 items was randomly selected, and an audit was c

Information Research Design: WorldCat and ProQuest

1. Use WorldCat (in FirstSearch), a database selected in ProQuest, and ebrary to search for your topic. What is the major difference between WorldCat and the ProQuest database you selected? How does WorldCat differ from your local library catalog? Describe ebrary and how it differs from your local library catalog? 2. For Pro

Comparison of three search engines

The topic that I will be researching will be focused on the effectiveness of grass roots marketing campaigns for community colleges. 1. How do Google and Metacrawler compare to the Vivisimo search engine? 2. Compare the results of your search, not only in terms of the number of hits, but also in terms of the value of the i

Homework Help: Descriptive Statistics

[1] The computer giant IBM has 329,373 employees and 637,133 stockholders. A vice president plans to conduct a survey to study the number of shares held by individual stockholders. Are the numbers of shares held by stockholders discrete or continuous? Identify the level of measurement (nominal, ordinal, interval, ratio) f

Many times we have seen and heard of statistics being used inappropriately, especially within our government agencies. One particular agency out of the many others had given inappropriate reports on economic conditions based on the unemployment rate in the country. Often times, these reports only include the average number of individuals that are unemployed, the report fails to provide accurate information that reflects the reality. When the agency reported an unemployment rate of 9.1%, it failed to put into consideration those individuals that are underemployed or living below the poverty level, including all those individuals who have given up looking for jobs, nor the unemployment rates of minority segments of the population, which may be upwards by up to 20%. This is discouraging and disheartening when federal government agencies fail to deliver what it is expected to do to the population it serves, especially when it comes to the provision of vital and accurate data. QUESTION: The US government is the largest employer in America. It's a good point about the government 20% only including the unemployment and disability payouts. My question is what the "real" total?? 20% does not seem to be a large proportion of the total dollars. How is our 20% number compared to other countries and if it is, how is it related to population size like China, India, Pakistan, or how it is related to countries that have more social programs i.e., Sweden, Norway.

Many times we have seen and heard of statistics being used inappropriately, especially within our government agencies. One particular agency out of the many others had given inappropriate reports on economic conditions based on the unemployment rate in the country. Often times, these reports only include the average number of in

Unimodal Symmetrical Distribution

In a unimodal, symmetrical distribution as shown in the figure below, A) the mean is the same as the median, but the mode can be different. B) the mean, the median, and the mode are the same. C) the median and the mode are the same, but the mean can be different. D) the mean, the median, and the mode are different.

X R Control Chart for Large Hotel in a Resort Area

I have one more control chart which is a X R Chart. Prepare the chart and any information that should go along with it such as trends, runs, or is it out of control. (UCL, LCL) A large hotel in a resort area has a housekeeping staff who clean and prepare all of the hotel's guest rooms daily. In an effort to improve service th

SPSS DATA FILE CJGSS1.sav

Work with the data file "cjgss1.sav". 1. Examine the meaning (in "Label") and values of the following four variables: "hit", "gun", "burglar" and "robbry"; answer the following questions: o How are these variables similar? o Describe how these variables are coded (i.e., their values). o What concept will a combination of t

Weighted Arithmetic Mean

A stockholder placed the following order for a customer: 50 shares of kaiser aluminum preferred at $104 a share 100 shares of GTE preferred at $25.25 a share 20 shares of Boston Edison preferred at $9.125 a share What is the weighted arithmetic mean price per share?

Calculate Mean, Variance, and Standard Deviation.

In order to control costs. a company wishes to study the amount of money its sales force spends entertaining clients. The following is a random sample of six entertainment expenses (dinner costs for four people) from expense reports submitted by numbers of the sales force. Sales force numbers 157 132 109 145 125 139

Statistics!!!

I attached a file. I need your help and this file is very important to me. 1. Which of the following statements about descriptive statistics are correct? Why? a. All of the data is used to compute the mean b. The mean should be preferred to the median if the data are noticeably skewed c. The variance has the same units of

Please See Attached,

Problem Set 1 The next tab contains data on a sample of 1080 salespeople from a large electronics retail company. The dataset contains the following variables: Sales: Total sales (in $) by each salesperson last year Department: What department (home electronics, computers, etc) the salesperson works in. Year born: The y

The CEO asked you to put together a report consisting of the following sections ... analyzing mean and standard deviation, sample size, confidence intervals, correlation, t-test, control chart

**SUMMARY OF PROBLEM:** Section A: The company is thinking of launching a new product line and wishes to assess the likely response from regular customers. 1.What was the data mean or average satisfaction score? 2.What was the mode? 3.What was the median? 4.What was the standard deviation? 5.Which of the statistica

Quantitative Methods

Explain the characteristics of integer programming problems. Give specific instances in which you would use an integer programming model rather than an LP model. Provide real-world examples. Explain how the applications of Integer programming differ from those of linear programming. Why is "rounding-down" an LP solutio

Quantitative analysis

12-14 Jean Walker is making plans for spring break at hte beaches in Florida. In applying techniques she learned in her quantitative methods class, she has identified the activities that are necessary to prepare for her trip. The following table lists the activities and the immediate predecessors. Draw the network for this pro