Let us say Sixto and a group of his classmates would want to study the consumption patterns of a municipality which has a population of 10,000 familiesThey would like to draw 1,000 sample units from this population. The clerk from the municipal hall provided them with the following information: 500families belong to the high-income group; 2,500 families to the middle-income group; and 7,000 families to the low-income group. Based on thisinformation, how can Sixto and his friends pick 1,000 sample units proportionate to the aforementioned income classification? Demonstrate yoursample distribution by constructing a table. Use MS Excel/Google Sheets formula for your calculations.

Given Information: Consider the study of the consumption patterns of the municipality which has a…

Answered: Let us say Sixto and a group of his…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The Women’s Institutional Studies group at a Midwestern university wanted to compare the percentages of female faculty members in the various units on campus in Spring 2004. Of particular interest were the percentages of female faculty in the College of Education and in the College of Business . In a sample of 80 College of Education faculties, there were 36 females, and in a sample of 70 College of Business faculties, there were 15 females. Based upon this sample information, which of the following is the 98% confidence interval for the difference in the actual percentages of female faculty between College of Education and College of Business ? a. (0.075, 0.405). b. (0.123, 0.357). c. (-0.012, 0.252). d. (0.058, 0.422). e. (0.101, 0.379).
The following table is of profit, revenue, and number of employees of 10 companies. Profit US $ billion Revenue/employee No. of Employees Exxon Royal Dutch British Petroleum Petrofina SA Texao In Elf Aquitaine ENI Chevron Corp. PDVSA SK 11.7 7.4 4.4 2.3 2.9 0.98 3.4 3.1 4.5 0.125 US$ 96,170 74,288 70,859 67,396 92,102 11,461 37,415 84,615 84,821 4,087 a) For the 10 companies, the mean profit per company is $ (Round answer to one decimal place.) c) The "overall" mean profit per employee is $ (Round answer to nearest whole number.) billion US. b) The "overall" mean revenue per employee (i.e., for all employees of these firms combined) of the 10 companies is US. $ (Round answer to nearest whole number.) 122900 105100 56440 69062 29311 83800 80176 39364 56597 30595 US/employee.
In the Focus Problem at the beginning of this chapter, a study was described comparing the hatch ratios of wood duck nesting boxes. Group I nesting boxes were well separated from each other and well hidden by available brush. There were a total of 475 eggs in group I boxes, of which a field count showed about 274 hatched. Group II nesting boxes were placed in highly visible locations and grouped closely together. There were a total of 796 eggs in group II boxes, of which a field count showed about 274 hatched. (a) Find a point estimate p1 for P1, the proportion of eggs that hatch in group I nest box placements. Find a 99% confidence interval for p1. (Use 3 decimal places.) P1 lower limit upper limit (b) Find a point estimate p2 for p2, the proportion of eggs that hatch in group II nest box placements. Find a 99% confidence interval for p2. (Use 3 decimal places.) lower limit upper limit (c) Find a 99% confidence interval for p1 – P2. (Use 3 decimal places.) lower limit upper limit Does…
For the three-part question that follows, provide your answer to each question in the given workspace. Identify each part with a coordinating response. Be sure to clearly label each part of your response as Part A, Part B, and Part C.Part A: What is the term for a generalization made about a population using the data from a sample?Part B: Name one challenge that may occur when using a sample to draw a conclusion about a population.Part C: A researcher collects data about the annual salary of employees who work in the information technology field. It would be difficult to survey all employees, so a sample of the population is surveyed. The data is recorded below. Use the table to write one conclusion that can be drawn. Explain why this conclusion is valid. Salary Range (Per Year) Number of Employees $50,000-$59,999 147 $60,000-$69,999 159 $70,000-$79,999 225 $80,000-$89,999 27
Use the following information in TABLE 1 on five college professors to answer the following 5 questions. Name Specialty Sex Age Rank Able Economics M 40 Associate Professor Roth Management F 41 Full Professor Martin Marketing M 52 Associate Professor Brock Finance F 30 Assistant Professor Young Accounting F 35 Assistant Professor 1. Based on Table 1, which is quantitative variable? (This is a multiple choice question. Select the one correct answer.) Group of answer choices Specialty Age Sex Rank 2. Based on Table 1, what scale of measurement is used for Rank? Group of answer choices Nominal Ratio Ordinal Interval
Investigate undergraduate student attitudes toward controversial technology fee. Known population parameters: class (30% FR, 20% SO, 30% JR, 20% SR) and gender (50% male, 50% female) 10 students will interview 10 friends each What should be the composition (class and gender) of those 100 students?
2. You manage a company that purchases movie theaters. You have a spending goal of $4, 300 million for the purchase of new theaters to seat a total of 4,980 guests. You are given the following data: ABC theaters seat a total of 330 guests and cost $250 million each, CineMovie theaters seat 270- guests and cost $200 million each, and Movies 'n' Stuff theaters seat 240 guests and cost $250 million each. Your company wants you to buy half as many ABC theaters as the combined total of CineMovie and Movies 'n' Stuff theaters. You are tasked with determining how many of each theater your company should purchase. (a) Define variables and determine the constraints associated with this problem. Use them to set up a system of linear equations that models this scenario. (b) After applying Gauss-Jordan reduction, you arrive at the following augmented matrix: T10 0 6 Io 104 0 018 How many of each theater should your company purchase?
Consumer Reports rated automobile insurance companies and gave annual premiums for top-rated companies in several states. The figure below shows premiums for urban customers (married couple with one 17-year-old son) in three states. The box plots were all drawn using the same scale on a TI-8- Texas Pennsylvania California (a) Which state has the lowest premium? the highest? O lowest, California; highest, Texas O lowest, Texas; highest, Pennsylvania O lowest, Pennsylvania; highest, California lowest, California; highest, Pennsylvania
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