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Textbook Expert
Textbook ExpertVerified Tutor
9 Nov 2021

Given information

Here, the mean of the given distribution(μx)=3; The standard deviation(σx)=0.7; And the sample size(n)=400;

P(Σx < 1,186)=?

Step-by-step explanation

Step 1.

Mean for the sum=(n)(μx)=400*3=1200;

And the standard deviation for the sum of given distribution=()(σx)

=  

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