(Solution) An army quartermaster is interested in making sure he has enough helmets for soldiers at a certain base. > Snapessays.com


(Solution) An army quartermaster is interested in making sure he has enough helmets for soldiers at a certain base.


An army quartermaster is interested in making sure he has enough

 

helmets for soldiers at a certain base. Assume that the distribution of head

 

circumference of soldiers is normal with a mean of 58 cm and a SD of 1.5 cm.

 

Helmets come in sizes S, M, ML, L, XL and XXL. The following size chart

 

(Rowlett, 2000; http://www.unc.edu/~rowlett/units/scales/hatsizes.html) will

 

be useful:

 

 

 

a. What is the probability that a randomly chosen soldier will need an XL

 

helmet?

 

 

 

b. The quartermaster is assigned to a base that has 1,000 soldiers, and the

 

quartermaster is ordering new helmets for all of the soldiers. How many size

 

XL helmets does the quartermaster need to order to ensure that the

 

probability of running out is less than 5%?

 


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This question was answered on: Sep 21, 2023

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