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

Calculate present value-hpr and future value , Semiannual coupon = 10%*$100...

Semiannual coupon = 10%*$100/2 = $5 Since it is one-year semiannual bond, it pays two coupons, one at six months from now and the other at maturity when the bank account will be

Governmental Accounting, The fund statements for gorvernmental funds should...

The fund statements for gorvernmental funds should include a? A. Balance sheet for governmental funds. B. Statement of revenues,expenses, and changes in fund net assets. C.Statemen

Projectile, two object are on the same level we release the first one verti...

two object are on the same level we release the first one vertically and the other one with an initial velocity which object will land first?

Operational research, what is the defination of model in operational resea...

what is the defination of model in operational research?

Calculate the rates of return and standard deviations, 1. Stock A and B hav...

1. Stock A and B have the following probability distributions: ECONONOMY                    PROBABILITY                      K(A)                       K(B) Boom

Numerical annalysis, the number x = 37.46235 is round off to four significa...

the number x = 37.46235 is round off to four significant figures. compute the absolute error

Individual tax accounting, need help with exercise that asks to calculate g...

need help with exercise that asks to calculate gross income, adjusted gross income and taxable income based on items1-13, which i can submit the exercise copies as soon as you tell

Difference, difference b/w historigrams & histogram?

difference b/w historigrams & histogram?

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