Let X1….X12 denote a random variable of size 12 from the uniform
distribution U(0,10).
If Y=X1+X2+…+X12.
Let ψ(.) denote the cumulative normal distribution.
Use normal approximation to find the probability P(Y≦80) which is:
a. ψ(1/√3)
b. ψ(-1/√3)
c. ψ(-2)
d. ψ(2)
e. none of above
請問有人會這一題嗎?>"<
希望有人可以幫我解答,先謝謝大家了~~!!
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