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

one-way anova and hypothesis , Suppose we wanted to compare the somatic co...

Suppose we wanted to compare the somatic complaints (as measured on a scale known as the Physical Symptom Survey or PSS) of three groups of people; nonsmokers, smokers, and people

Card custodian statement, Card custodian statement A zero poise due declar...

Card custodian statement A zero poise due declaration: listing all transactions throughout the billing period: that is sent to the buy card custodian by the purchase card supplier

How can do entry, mr.sunil join as a new business partner and borrowed rs. ...

mr.sunil join as a new business partner and borrowed rs. 850000 from ansul investment co. and depoisted the money into a uti bank account on 1-4-2006.

Clearance pattern, Clearance pattern The proportion of the entire amount d...

Clearance pattern The proportion of the entire amount disbursed that is debited alongside the state''s bank account every day after the disbursements,

Degree of tastiness, A researcher is interested in comparing tastiness of d...

A researcher is interested in comparing tastiness of different parts of cheese in grilled cheese sandwiches.  The researcher expects that Cheddar cheese grilled sandwiches are rate

Oecd database exercise , For this second assignment you will have to use th...

For this second assignment you will have to use the OECD database to investigate possible changes in the policy preferences of Western welfare states. You have to develop (i) an in

F2 test x, What is F2 Test,  X, Y Arithmetic Means  The above method of fi...

What is F2 Test,  X, Y Arithmetic Means  The above method of finding out regression equation is tedious. The calculations can very much be simplified if instead of dealing with th

Permutation and combination, How many different starting lineups of 5 baske...

How many different starting lineups of 5 basketball players can be chosen from a squad of 13 players?

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