Question 1194786
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It's not clear what you are asking for here; perhaps you are using the wrong vocabulary.<br>
A probability function P(x) gives the probability that a certain outcome is obtained.  For a uniform distribution of a continuous variable, the probability of any exact value in the specified range is zero, so asking for the probability function for a variable with uniform distribution of values between 9 and 15 doesn't make sense.<br>
Re-post, asking the question you really mean to be asking.<br>