Q77
If X is a normal variable with mean 30 and standard deviation 5, what is probability (26 ≤ X ≤ 34), given A(z = 0.8) = 0.2881?
A.
0.2881
B.
0.5762
AnswerC.
0.8181
D.
0.1616
Answer: Option B
Solution
Answer: Option B
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