The degrees of freedom for the numerator and the denominator

Assignment Help Basic Statistics

Reference no: EM131134484

A sales analyst wants to determine whether there is a difference in the mean monthly sales of a company's four sales regions. Several salespersons from each region are randomly selected and they provide their sales amounts (in thousands of dollars) for the previous month. The results are shown in the table. At a = 0.05, can the analyst conclude that there is a difference in the mean monthly sales among the sales regions? Assume that each population of sales is normally distributed and that the population variances are equal.

North	East	South	West
34	47	40	21
28	36	30	30
18	30	41	24
24	38	29	37
	44		23

a. Identify the claim and state H0 and Ha.

b. Identify the level of significance a.

c. Determine the degrees of freedom for the numerator and the denominator.

d. Find the critical value F0 and identify the rejection region.

e. Find the test statistic F. Sketch a graph.

f. Decide whether to reject the null hypothesis.

g. Interpret the decision in the context of the original claim.

Reference no: EM131134484

Questions Cloud

Provide comprehensive explanation of foreign exchange market : Provide a comprehensive explanation of foreign exchange markets. Be sure to include examples of how forward markets and spot markets operate.

Dangers for society which depends on computer screens : what dangers are there for society which depends on computer screens rather than face to face contact for its main means communication.

Discuss what the research shows about stress : Discuss what the research shows about stress and its influence on the development of the mental disorder. You are to include a discussion of either the diathesis-stress model or the reciprocal gene-environmental model. (At minimum 1 paragraph)

Do you feel that the federal reserve bank is necessary : Do you feel that the Federal Reserve Bank is necessary? Do you feel that it is currently doing its job? What are some improvements you can propose? This answer should be between 100-150 words.

The degrees of freedom for the numerator and the denominator : A sales analyst wants to determine whether there is a difference in the mean monthly sales of a company's four sales regions. Several salespersons from each region are randomly selected and they provide their sales amounts (in thousands of dollars..

How much in excess reserves does first national hold : How much in excess reserves does First National hold? Provide alternatives that Bob can consider. Provide your conclusion on the case study.

Write essay on the scramble for africa : Write an essay on the TOPIC: The Scramble for Africa: Why played a role in Involvement.- The paper should include a bibliography

To estimate the population proportion of workers : According to Runzheimer International, in a survey of relocation administrators 63% of all workers who rejected relocation offers did so for family considerations. Suppose this figure was obtained by using a random sample of the files of 572 worke..

Is there a trade-off between wages and total employment : Is there a trade-off between wages and total employment?

User Account

All Pages