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My answers are in bold. I know there is a document already uploaded with answers but I don't believe they are right. Thanks!

My answers are in bold. I need help with the sign test and calculating probability. I know there is a document already uploaded with answers but I don't believe they are right. Thanks!


13. (5 points) A company has just switched to a 4-day work week. It has measured the number of units produced per week for 10 employees before and after the change. Does the change impact production. Show your work.



Employee    Before      After

A 25 23 +

B 26 24 +

C 27 26 +

D 22 19 +

E 29 30 -

F 25 24 +

G 29 22 +

H 30 32 -

I 25 23 +

J 28 21 +


Does changing the workweek influence sales? Use α =.05 2 tailed.


State the null hypothesis.

Change in the workweek does not influence the production


State the alternative hypothesis.

Change in the workweek does influence the production


Compute the sign test (ie., how many plusses and minuses). 


 

What is the probability of observing the results above just by chance?



State your conclusions.

Fail to reject the null hypothesis. 

Top Answer

Null hypothesis, Ho: Change in the workweek does not influence the production Alternative... View the full answer

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a) Yes , changing the workweek influence... View the full answer

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