The Excel file labeled Customer service champs.xlsx lists the top 25 companies, with the best customer service
Question:
The Excel file labeled Customer service champs.xlsx lists the top 25 companies, with the best customer service scores ranked by Business Week in 2012.
a. Determine the coefficient of variation.
b. Calculate the z-score for a company with a score of 900.
c. Test if the empirical rule holds true by determining the percentage of observations that fall within + two standard deviations from the mean.
d. Verify that Chebyshev’s Theorem holds true by deter-mining the percentage of observations that fall within + three standard deviations from the mean.
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 100% (8 reviews)
Using Excel x 90430 and s 4678 a b c x x zs x 9043 2 4678 99786 x 9043 2 4678 81...View the full answer
Answered By
Muhammad Salman Alvi
Well, I am a student of Electrical Engineeing from Information Technology University of Punjab. Just getting into my final year. I have always been good at doing Mathematics, Physics, hardware and technical subjects. Teaching profession requires a alot of responsibilities and challenges.
My teaching experience started as an home tutor a year ago. When I started teaching mathematics and physic subjects to an O Level student. He was about 14 years old. His name was Ibrahim and I used to teach him for about 2 hours daily. Teaching him required a lot of patience but I had to be polite with him. I used to give him a 5 min break after 1 hour session. He was quite weak in basic maths and calculation. He used to do quite a lot of mistakes in his homework which I gave him weekly. So I decided to teach him basics from scratch. He used to say that he got the concept even if he didn't. So I had to ask him again and again. I worked on his basics for a month and after that I started taking a weekly test sesions. After few months he started to improve gradually. Now after teaching him for about a year I can proudly say that he has improved alot. The most important thing was he managed to communicate all the difficullties he was facing. He was quite capable and patient. I had a sincere desire to help him reach to its full potential. So I managed to do that. We had a very good honest relationship of a student and a teacher. I loved teaching him as a tutor. Now having an experience of one year teaching I can read students quite well. I look forward to work as an online tutor who could help students in solving their all sort of difficulties, problems and queries.
4.90+
29+ Reviews
43+ Question Solved
Related Book For
Question Posted:
Students also viewed these Statistics questions
-
The Excel file labeled Lowes. xlsx lists the receipt total for 350 randomly selected customers for Lowes, a home improvement store. a. Using Excel and the 2 k > n rule, construct a frequency...
-
The Excel file labeled Lowes.xlsx lists the receipt total for 350 randomly selected customers for the home improvement chain Lowes. a. Use these data to construct a 95% confidence interval to...
-
The Collins Company has five inventory items on hand at the end of the year. The year-end selling prices, and estimated costs of completion, disposal, and transportation (selling costs) for each of...
-
Which sets of lines can be removed without stopping the code from compiling and while printing the same output? (Choose three.) A. Lines 15 and 17 B. Lines 16 and 23 C. Lines 17, 18, and 22 D. Line...
-
What is an efficient market? What makes the Internet an efficient market and what indicates that it is not an efficient market?
-
The demand for organic carrots is given by the following equation: QOD = 75 - 5 PO + PC + 2I Where PO is the price of organic carrots, PC is the price of conventional carrots, and I is the average...
-
A negatively charged particle is at rest in a region where a uniform magnetic field points in the positive \(x\) direction and a uniform electric field points in the positive \(y\) direction. What is...
-
Horizon Communications has the following stockholders equity on December 31, 2016: Stockholders' Equity Paid-In Capital: Preferred Stock4%, $11 Par Value; 150,000 shares authorized, 22,000 shares...
-
5 Which one of the following correctly represents Sodium oxide? +2 XX a) Na 20 XX 6) 2NaOx x; 1-2 'xx' 1-2 c) 2 Na 20% c) Na XX XX 6 An element with atomic number_ will form a basic oxide. a) 7 (2,5)...
-
A 450-mm-long AISI 1020 steel rod is subjected to a tensile load of 55 kN. The allowable tensile stress is 140 MPa and the allowable total elongation is not to exceed 0.2 mm. Calculate the required...
-
As a measure of productivity, Verizon Wireless records the number of customers each of its retail employees activates weekly. An activation is defined as either a new customer signing a cell phone...
-
The following table shows the frequency distribution for the golf scores recorded during the 2012 Masters tournament: Score Frequency 278282 . 6 283287 . 12 288292 . 21 293297 . 16 298302 . 6 303307...
-
Which statement is true about economic profit in the long run? a) Both the monopolist and the perfect competitor make one. b) Neither the monopolist nor the perfect competitor makes one. c) Only the...
-
From the following information prepare: (1) Debtor's Subsidiary / individual Ledger Accounts (2) Debtor's Control Account (3) Debtor's Account Balance Reconciliation Statement/list (4) Sales Account...
-
A fluid that exists as a liquid at 1 atm and 25 C with a specific volume of 0.316 x10-2 cm^3/g. The volume expansivity term is found to be 3 = 1.28x10-3 [1/K]. While the isothermal compressibility is...
-
A 2.00 m rod is rotating with an oscillating angular momentum given by sin(2.00) . If a small rocket with oscillating linear momentum 10.0cos(2.00) is fired at =0.00 s , at what time will it need to...
-
Assets Cash CONCORD COMPANY Comparative Balance Sheets December 31 Accounts receivable Inventory Property, plant, and equipment Accumulated depreciation Total Liabilities and Stockholders' Equity...
-
A new university has been built outside a small town in Scotland, which has resulted in a mass influx of workers and their families to the area. As a result of this, the town has been suffering from...
-
The sum of the measures of the interior angles of a convex polygon is given. Classify the polygon by the number of sides. 1980
-
Determine whether the lines are parallel, perpendicular, or neither. 2x + 3y = -12, 2y - 3x = 8
-
In a small town, two lawn companies fertilize lawns during the summer. Tri-State Lawn Service has 72% of the market. Thirty percent of the lawns fertilized by Tri State could be rated as very healthy...
-
Suppose 70% of all companies are classified as small companies and the rest as large companies. Suppose further, 82% of large companies provide training to employees, but only 18% of small companies...
-
Use the values in the contingency table to solve the equations given. a. P(E) = ___________ b. P(B U D) = ___________ c. P(A E) = ___________ d. P(B | E) = ___________ e. P(A U B) = ___________ f....
-
For each ordered pair, determine -6x+7y=2 7x-4y=6 a solution to the system of equations.
-
Review the meaning of the concepts or terms given in Key Terms and Concepts. Distinguish between a production department and a service department. Distinguish between a direct cost and an indirect...
-
What would you like the members of your learning community to know about your global health interests, perspectives, and life experiences? How will you prepare to listen and learn from others? Why...
Study smarter with the SolutionInn App