Cho tập hợp A= { x= n² + 2 + 7 / n thuộc Z, -2 < n ≤ 3 } . Hãy viết tập hơp
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Answer:
Step-by-step explanation:
Given that there are two machines available for cutting corks intended for use in wine bottles.
X1 = diameter of I machine and X2 = diameter of II machine
X1 is N(3.04, 0.02) and X2 is N(2.9, 3.1)
Acceptable is mean =3 and std dev = 0.1
a)
b)
Both are certain events.