normality assumption , Business Management

Assignment Help:

Most air travelers now use e-tickets. Electronic ticketing permits passengers to not worry about a paper ticket, and it costs the airline companies less to handle than paper ticketing. Though, in recent times, the airlines have received complaints from passengers regarding their e-tickets, particularly when connecting flights and a change of airlines were involved. To investigate the problem an independent watchdog agency contacted a random sample of 20 airports and collected information on the number of complaints the airport had with e-tickets during the month of March. The information is shown in the table below.

800_22.png

a.    Suppose that the data are approximately normally distributed, is there sufficient evidence for the watchdog agency to conclude that the mean number of complaints per airport is less than 15 per month? Use a .05 level of significance.

159_22.png

b.    Is the normality assumption in part a necessary? Explain your answer.

 c.    Using a graphical approach discussed in the course, determine whether or not the assumption of normality appears to be valid. Show your graph and explain your answer.

 

 


Related Discussions:- normality assumption

Functional structure, what is the span of control of the financial manager

what is the span of control of the financial manager

Forecast the sales of a new product, Question: (i) Give two examples of...

Question: (i) Give two examples of diffusion models that could be used to forecast the sales of a new product. (ii) With reference to common pattern portrayed by the lifecy

Hi, i have problem with my organisaion and management assighnment about art...

i have problem with my organisaion and management assighnment about article based on managerial ethics and social responsibility..

Industrial and commercial bank of china (icbc), Industrial and Commercial B...

Industrial and Commercial Bank of China (ICBC) a) An Initial Public Offering (IPO) happens when a publicly-listed company floats its shares on a stock exchange for the awfully

Unsolicited job application letter to a company, Write an unsolicited job a...

Write an unsolicited job application letter to a company that you would like to work for in a specific position. Include a one page profile about yourself

Balance-flexibility-stability affected in the organisation, How is the bala...

How is the balance, flexibility and stability affected in the organisation? Balance, Flexibility and Stability: Every units of an organization should be balanced to attain

Factors - decision on proposed strategy change, Factors to Consider Before ...

Factors to Consider Before Taking a Decision on the Proposed Strategy Change Although most of the striking and important questions have been considered or highlighted which

Centralization of authority and responsibility, Ask question the principle ...

Ask question the principle of centralization and responsibility

Explain relationship of basic components of the organisation, Explain the r...

Explain the relationship of basic components of the organisation. Relationship of the fundamental components of the organization: Objectives as decided within step I abov

Strategic issues facing the service industry, Strategic Issues Facing the S...

Strategic Issues Facing the Service Industry In today's challenging business environment, professional service industry is facing various kinds of strategic obstacles related

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd