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Statistical inference — Question 293

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Q293 · Practice questionTechnology-freeSimple familiar1 mark

QUESTION 293

Independent observations are normal with mean 40 and standard deviation 8. Which describes the distribution of sample means from samples of size 16? The second parameter of N is variance.
(A)
N(40,4)N(40,4)
(B)
N(40,64)N(40,64)
(C)
N(2.5,4)N(2.5,4)
(D)
N(40,0.25)N(40,0.25)
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