# Qt2 Chapter 4 Tutorial Answer Essay

416 words - 2 pages

Quantitative Techniques 2 Chapter 3

Tutorial Exercise 4 (Suggested Solution) 1. Let X be the value of the population.

∑ x = 129.4 ∑ x
n 1 s2 = n −1 x=

2

= 2027.86

n=9

∑ x = 129.4/9 = 14.38 (thousands)

(correct to 2 decimal places)

(∑ x

2

− nx 2 =

)

1 (2027.86 − (9)(14.3778) 2 ) = 20.92 (thousands) 8
ˆ σ 2 ≅ s2 = 20.92
(correct to 2 decimal places)

a)
b) 2.

ˆ μ ≅ x = 14.3778,

1 n = 38, σ σx = = 0.8/√38 = 0.1298 n x ± (1)σ x = 5.1 ± 0.1298 = (4.97, 5.23)

(correct to 2 decimal places)

Confidence level the interval is 68.26%

3.

Let X be the value of the population. a) b) c) d) x ± Z 0.2 σ x x ± Z 0.1 σ x x ± Z 0.05 σ x x ± Z 0.02 σ x = = = =
x ± 0.84σ x x ± 1.28σ x x ± 1.64σ x x ± 2.05σ x

4.

Let X be the waiting time of the customer. a) b) c) σ = 5/2 = 2.5, x = 25 x ± Z0.025 σ = 25 ± 1.96 (2.5) = (20.10, 29.90) minutes σ = 5/3 = 1.6667, x = 15 x ± Z0.025 σ = 15 ± 1.96 (1.6667) = (11.73, 18.27) minutes Confidence interval is used to estimate a population parameter.

Page 1 of 2

Quantitative Techniques 2 Chapter 3

Tutorial Exercise 4 (Suggested Solution) (cont.)

5.

Let X be the value of the population. s = 6.1, a) x = 20.9, N = 360, n = 35

σx =

σ

n ˆ x = 1.0311 σ

6.1 s = n 35

b)

96% C.I for μ: = x ± Zα/2 σ x = x ± Z0.02 (6.1/√35) = 20.9 ± 2.05 (1.0311) (correct to 2 decimal places) = (18.79, 23.01)

6.

Let X be the tire pressure. s = 2.1, a) b) c) n = 62,
ˆ σ = s = 2.1

x = 24

ˆ σx =

ˆ σ n

=

s n

=

2.1 62

= 0.2667

95% C.I for μ: = x ± Zα/2 σ x = x ± Z0.025 (2.1/√62) = 24 ± 1.96 (0.2667) (correct to 2 decimal places) = (23.48, 24.52)

Page 2 of 2

## Other assignments on Qt2 Chapter 4 Tutorial Answer

### Qnt 561 Week 2 Weekly Learning Assessment – Assignment

1187 words - 5 pages Chapter 5 Exercise 4 A large company must hire a new president. The Board of Directors prepares a list of five candidates, all of whom are equally qualified. Two of these candidates are members of a minority group. To avoid bias in the selection of the candidate, the company decides to select the president by lottery. a. What is the probability one of the minority candidates is hired? (Round your answer to 1 decimal place.) b. Which concept

### Employment Law Essay

1520 words - 7 pages CHAPTER 14 Religious Discrimination 1. Freedom of Religion is guaranteed by each state under the 1st Amendment. Answer: FALSE 2. Religion can be a BFOQ. Answer: TRUE 3. Accommodating religious beliefs is required unless it presents an undue burden to the employer. Answer: TRUE 4. An employer is entitled to know of the employee’s religious beliefs before granting an accommodation. Answer: TRUE 5. The wearing of

### Netw360

855 words - 4 pages -clicking on the Chanalyzer_Installer.3.4.msi file. 4. Start the Chanalyzer. Once the Chanalyzer is running, open the first capture file, Capture1.wsr, and let the recording run for a few minutes. Using this capture, answer the following questions in your lab report. Question 1: Are any channels being used that overlap other channels? Question 2: If you had to install a new wireless LAN, what channel would you use? 5. Close

### Saliva

799 words - 4 pages number of significant figures/decimal places: 1.80 m + 142.5 cm + 5.34 × 105 (m [Answer: 3.76 m] (c) Express the following using the prefixes: (i) 1×106 volts, (ii) 2×10−6 meters, (iii) 6×103 days, (iv) 18×102 bucks, (v) 8×10−9 pieces. 4. (a) The volume of a wallet is 8.50 in3. Convert this value to m3, where

### Tinga

2471 words - 10 pages purchasing patterns of customers b) RFM is considered a data mining application within business intelligence c) RFM requires substantial computing power and cannot be implemented in Excel d) all of the above 29) A popularly used data mining application is: a) Market Basket Analysis b) RFM analysis c) OLAP analysis d) Sensitivity analysis 30) In chapter 5 of the set text, we considered (in tutorial) how Malakai and Abbie could solve the

### Assignment

626 words - 3 pages your tutor before or by the 4th tutorial. 3. 4. Your assignment should be limited to 10 – 12 pages. 5. This assignment is worth 35 % of your final course grade. 6. Plagiarism in any form is prohibited. Plagiarised materials would not be accepted and zero (0) marks would be awarded for the work. 1 ASSIGNMENT QUESTION You are the president of the Parent-Teacher Association (PTA) at an urban school. At the last association

### European Classical Literature

4049 words - 17 pages of papers for the B.A. (Honours), B.Com. (Honours), B. Com., B.Sc. (Honours) Statistics and B.Sc. (Honours) Computer Science will be as follows: Type of Paper Max. Marks Theory Exam. I.A. Teaching per week Main Papers 100 75 25 5 Lectures 1 Tutorial Concurrent Courses 100 75 25 4 Lectures 1 Tutorial Credit Courses for B.Sc.(Hons.) Mathematics 100 75 25 4 Lectures 1 Tutorial  Size of the Tutorial Group will be in accordance

### Tqm Course Project

1203 words - 5 pages Chart tab to view the X-bar chart; you should see a chart that looks like the one below. (It’s called an X-bar chart because you plot averages, or X-bars, on it.) We can see that one point, Point 22, is below the lower control limit (LCL). 4. Click on the R-Chart tab to view the R-chart and you should see a chart that looks like the one below. No points outside the control limits can be seen. 5. We now have enough information to answer

### Acc 291 Week 3 Discussion Question 1

309 words - 2 pages ACC 291 Week 3 Discussion Question 1 This file ACC 291 Week 3 Discussion Question 1 comprises solution of these problems: "Why does a company choose to form as a corporation? What are the steps required to become a corporation? What are the advantages and disadvantages of the corporate form of doing business?" Business - Accounting ACC 291 All Week 4 Assignments - Individual WileyPlus Assignment Includes: Week 4 Chapter

1896 words - 8 pages SECTION A: Multiple Choice 1. D 2. E 3. C 4. E 5. C 6. B 7. E 8. B 9. A 10. C 11. E 12. D 13. B 14. C 15. A SECTION B: Short Answer (8 Questions) (Answer all questions in this section, each question is worth 5 marks) 1. How is it possible that dividends are so important but, at the same time, dividend policy is irrelevant ? Answer : Signalling theory shows that

### Econ Tutorial

828 words - 4 pages UNIVERSITY OF TECHNOLOGY, JAMAICA SCHOOL OF BUSINESS ADMINSTRATION ECO 1001: INTRODUCTION TO MICROECONOMICS TUTORIAL #1 1. Which of the following is the best definition of economics? a) The study of how individuals and societies choose to use the scarce resources that nature and previous generations have provided. b) The study of how consumers spend their income. c) The study of how business firms decide what

## Similar Documents

### International Finance Management Answer 1 Essay

667 words - 3 pages FINC3011 Tutorial 1 B&H Chapter 2 Questions 1, 2, 3, 4, 5, 6 & 9 1. What is an exchange rate? Answer: An exchange rate is the relative price of two currencies, like the U.S. dollar price of the euro, the Thai baht price of the Malaysian ringgit, or the Mexican peso price of the Canadian dollar. 2. What is the structure of the foreign exchange market? Is it like the New York Stock Exchange? Answer: The interbank foreign exchange market is a

### Lemon Essay

685 words - 3 pages have learned in the previous weeks. * Develop a creative name for your Lemonade Stand, and then explain why a name is important when you are considering branding options? * Create a Mission Statement for your Lemonade Stand (Chapter 7); then explain why a mission statement is important for any company? * You are very involved in your community; please outline your CSR plan (Chapter 4) for your business. * The textbook lists many

### Bi Question Essay

261 words - 2 pages Week 5 Tutorial Exercise Business Performance Management Task 1 Answer to Discussion Question: * 1. How does a KPI differ from an operational metric? 2. What are some of the drawbacks of relying solely on financial metrics for measuring performance? 3. How does a BSC align strategies and actions? 4. What does Six Sigma refer to? 5. What are some of the ways that the success of Six Sigma implementations is improved