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

Qualitative features of financial, Conceptual Structure has also resolved s...

Conceptual Structure has also resolved several issues which were uncertain by sales expectations for some time. Activities and dealings that can't be worked by designed financial s

Project, The trial balance of the Parton Wholesale Company contained the fo...

The trial balance of the Parton Wholesale Company contained the following accounts at December 31, 2010 the end of the company’s calendar year. PARTON WHOLESALE COMPANY Trial Bala

Time series, what are the uses of time series

what are the uses of time series

Cost accounting, 1. ABC produces a single product. Material A is added at t...

1. ABC produces a single product. Material A is added at the start of production and Material B at the end. Conversion is uniform throughout. Inspection before Material B is added.

Mean, It is a numerical average, as equal to the sum of terms in a given se...

It is a numerical average, as equal to the sum of terms in a given series divided by the number of terms in that series is the mean which is also called the expected value.

Histogram, difference between histogram and historigram

difference between histogram and historigram

Linear regression, Question: Students in a science class have just rece...

Question: Students in a science class have just received their grades on the first test.  The instructor has provided information about the first test grades in some previous c

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