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Textbook Expert
Textbook ExpertVerified Tutor
1 Nov 2021

Given information

Let X = one value from the object of interest.

ΣX = 15,200 , 

mean of unknown distribution(μX) = 19, 

standard deviation(σX) = 20, and sample size(n)=?

Step-by-step explanation

Step 1.

As we know, By The Central Limit Theorem for Sums,

Mean of the Sum,

 

15,200= n*19

n=800

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