An investment firm has classified its clients according to their gender and the composition of their investment portfolio (primarily bonds, primarilystocks, or a balanced mix of bonds and stocks). The proportions of clients falling into the various categories are shown in the following table:Portfolio CompositionBondsGenderStocksBalancedMaleFemale.18.12.20.10.25.15One client is selected at random, and two events A and B are defined as follows;Determine P(Balanced | Male).O 0.3678O 0.2567O 0.3968O 0.5

Answered: An investment firm has classified its…

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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4. Filtering RedRocks Consulting Contributions RedRocks Consulting is a large computer consulting firm in Denver, Colorado. DonMcCubbrey, the CEO and founder of the firm, is well-known for his philanthropic efforts. Hebelieves that many of his employees also contribute to nonprofit organizations and wantsto reward them for their efforts while encouraging others to contribute to charities. Hestarted a program in which RedRocks Consulting matches 50 percent of each donation anemployee makes to the charity of his or her choice. The only guidelines are that the charity must be a nonprofit organization and the firm’s donation per employee may not exceed $500 a year.Don has started an Excel file, T3_RedRocks_Data.xls, to record the firm’s donations. Included in this file are the dates the request for a donation was submitted, the employee’sname and ID number, the name of the charity, the dollar amount contributed by the firm,and the date the contribution was sent. Don wants you to help him…
Suppose you are a researcher and you are interested in determine the consumption behavior of all first year students at Mzumbe University. Due to limited resources you decide to select only 500 students to represent the entire group. Use the stratified sampling with probability proportional to size to identify the number of students from each programme that will be included in the sample. Assume that the total number of students in each degree programme is as indicated in the table below; Course Econ BAF HRM Education Computer No of students 500 800 1000 400 200 Source: Hypothetical data
Español The Ellington Dukes are a minor-league baseball team in Ellington, Georgia. As with most other minor-league teams, the Dukes rely heavily on promotions to bring fans to the ballpark. These promotions are typically aimed at fans of specific ages. The management for the Dukes has planned its current promotional schedule according to the following estimates: 15% of fans attending Dukes games are ages 0 to 12, 10% are ages 13 to 18, 30% are ages 19 to 35, 25% are ages 36 to 55, and 20% are over 55. A statistical consulting firm for the Dukes surveyed a random sample of 150 fans attending Dukes games in order to see if these estimates are accurate. For the sample of 150, the observed frequency of each age category is given in the top row of numbers in the table below. The second row of numbers contains the frequencies expected for a random sample of 150 fans if the Dukes' management's estimates are accurate. The bottom row of numbers contains the following value for each of the age…
6
A market research firm is investigating the appeal of three package designs. The table below gives information obtained through a sample of 200 consumers. The three package designs are labeled A, B, and C. The consumers are classified according to age and package design preference. Under 25 years 25 or older Total A 0.76 B 0.38 0.33 D 0.22 E 0.39 A Last saved 2:13:37 PM 22 54 76 B 34 28 If one of these consumers is randomly selected, what is the probability that the person prefers design A? 62 C 40 22 62 Total 96 104 200
An experiment was performed to attempt to answer the question of interest posed in Question 12. In the experiment, 48 Israeli college students were randomly assigned to eat in groups of six. Before ordering, half of the groups were told they would each be responsible for individual meal costs and the other half were told that the cost would be split equally among the six people at the table. The cost of meals per person was recorded. Summary statistics are given below: Payment Type Split Individual Bill Sample 24 24 size Sample $37.29 $50.92 mean Sample $12.54 $14.33 st. dev. Suppose a 95% confidence interval for usplit - Hindividual is constructed. What is the value of the best estimate of the difference in population means? (Subtract "split bill" – “pay - individually".) Report your answer to two decimal places. $
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Definitions. Define each of the following concepts. Where relevant, be sure to say what each is used for. Also, where relevant, give examples. a) Expected Cell Frequencies: b) Scatterplot:
a. A random sample of 150 approved mortgage applications is selected from a bank's database. Customers of this bank can choose either variable or interest-only mortgages. These mortgage choices have either a 20-year or 30-year term. The data are displayed i table below. Term Type of Mortgage 20-year Total 30-year 25 Variable 45 Interest Only 40 40 Total Use the table above to answer the questions below. i. If an approved application is selected at random, what is the probability that it is a 30-year term application? ii. If an approved application is randomly selected, what is the probability that the mortgage choice is variable and has a term of 20 years or is interest only and has a term of 20 years?
Political parties want to know what groups of people support them. The General Social Survey (GSS) asked its 2014 sample, "Generally speaking, do you usually think of yourself as a Republican, Democrat, Independent, or what?" The GSS is essentially an SRS of American adults. The large two‑way table provided breaks down the responses by the highest degree the subject held. None High School Jr. College Bachelor Graduate Strong Democrat 53 198 23 81 64 Not strong Democrat 52 204 31 70 49 Independent, near Democrat 40 163 26 66 42 Independent 118 251 36 67 30 Independent, near Republican 24 136 19 45 2525 Not strong Republican 19 142 30 71 30 Strong Republican 18 131 15 53 28 Other party 5 31 3 15 8 Use the four‑step process and the full table of counts to analyze the differences in political party support among levels of education. The sample is so large that the differences are bound to be highly significant, but provide the chi‑square statistic and its P‑value…
12
Technology A. Wearable technology B. Blockchain technology C. Artificial Intelligence D. loT: retail insurance Frequency A 2016 survey of insurance professionals explores the use of technology in the industry. be most used by the insurance industry in the coming year. 6. 10 ess a. Construct a bar chart and a pie chart. b. What conclusions can you reach concerning expected technology usage in the insura 17 24 E. loT: commercial insurance F. Social media G. Other 6 26 8 Click the icon to view the data table. a. Choose the correct bar chart below Print Done O A. OB. 30 30T 0ABCDEFG" 70 RCD'EF'G 0ABCDEFG" Technology 0A'BCDEFG Technology Technology Technology View instructor tip P Type here to search % 24 4. 423 3. 2 T E kouanbe louanbe

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