SOLUTION: By measuring the amount of time it takes a component of a product to move from one workstation to the next, an engineer has estimated that the standard deviation is 3.33 seconds.

Question 633818: By measuring the amount of time it takes a component of a product to move from one workstation to the next, an engineer has estimated that the standard deviation is 3.33 seconds.

Answer each of the following (show all work):

(A) How many measurements should be made in order to be 90% certain that the maximum error of estimation will not exceed 1.0 seconds?

(B) What sample size is required for a maximum error of 0.5 seconds?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi,

standard deviation is 3.33 seconds. 

A) 

    

B) 

    

 solve for n, rounding up  

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