Solved: The probability that ore samples taken from a region contain between and iron is
Chapter 5, Problem 106(choose chapter or problem)
In Exercises 105 and 106, the function
\(f(x)=k x^{n}(1-x)^{m}, \quad 0 \leq x \leq 1\)
where \(n>0, m>0\), and k is a constant, can be used to represent various probability distributions. If k is chosen such that
\(\int_{0}^{1} f(x) d x=1\)
then the probability that x will fall between a and b \((0 \leq a \leq b \leq 1)\) is
\(P_{a, b}=\int_{a}^{b} f(x) d x\)
The probability that ore samples taken from a region contain between 100a% and 100b% iron is
\(P_{a, b}=\int_{a}^{b} \frac{1155}{32} x^{3}(1-x)^{3 / 2} d x\)
where x represents the proportion of iron. (See figure.) What is the probability that a sample will contain between
(a) 0% and 25% iron?
(b) 50% and 100% iron?
Text Transcription:
f(x)=k x^n(1-x)^m, 0 leq x leq 1
n>0, m>0
int_0^1 f(x) d x=1
(0 leq a leq b leq 1)
P_a, b=int_a^b f(x) d x
P_a, b=int_a^b frac 1155 32 x^3(1-x)^3 / 2 d x
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