state the null and alternate hypotheses, Basic Statistics

Assignment Help:

The mean length of the work week for the population of American workers was reported to be 39.2 hours with a standard deviation of 4.8 hours in September, 2000. A researcher wants to determine if the average work week has changed from 39.2 hours. A sample of 112 workers yielded a mean of 38.5 hours. Based on this sample, can we conclude at the 5% significance level that the average length of the work week has changed?

A.   State the null and alternate hypotheses

B.    Identify the test statistic

C.   State the decision rule.

D.   Show the appropriate calculations and state the statistical decision.

E.    What conclusions can you draw concerning the length of work week for the population of American workers?

 


Related Discussions:- state the null and alternate hypotheses

Accounting and finance for managers, From the following information related...

From the following information related to XYZ Ltd.; you are required to find out (a) contribution (b) Break-even point in units (c) Margin of safety, (d) Profit Total Fixed Costs

Isotopes, Isotopes Elements having same atomic number Z, but different A ...

Isotopes Elements having same atomic number Z, but different A mass number for example 126C, 146C and 11H 21H, 31H are isotopes of carbon and hydrogen.

International accounting standards board-iasb, IASB -International Accounti...

IASB -International Accounting Standards Board : IASB is an independent body based in London, which is responsible for setting accounting standards. IASB started operations in the

Inventory control, Inventory control Inventory Control is the guidance of ...

Inventory control Inventory Control is the guidance of provide, storage and convenience of items to ensure an adequate provide without excessive oversupply. It can also be known a

Financial limitations and expertise, Expertsmind.com offering Limitations ...

Expertsmind.com offering Limitations and expertise in financial accounting In Financial sales it is also useful in the following respects:- (1) Increased volume of finan

Functions of statistics .., Mention four characteristics and functions of s...

Mention four characteristics and functions of statistics

Histogram, defference between historigrams & histogram

defference between historigrams & histogram

Statistic for business, Present the survey methodology which is going to be...

Present the survey methodology which is going to be used by describing primary and secondary data collection methods, population, sampling frame and sampling method/s, sample size

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