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A distribution is given as

X ~ U(0, 12).



What is the probability density function? (Enter exact numbers as integers, fractions, or decimals.)

f(x) = ? , where ? ≤ x ≤ ?

User Lasandra
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1 Answer

4 votes

If X is uniformly distributed on the interval (0, 12), then its PDF is


f_X(x) = \begin{cases}\frac1{12} &amp; \text{if }0 < x < 12 \\ 0&amp;\text{otherwise}\end{cases}

or simply


f_X(x) = \frac1{12} \text{ where } 0 < x < 12

and the zero-elsewhere case is assumed.

Whether you include 0 and 12 in the domain is irrelevant, since the probability that X = 0 or X = 12 are both zero.

User Yallie
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