Question: Question 7 (3 marks) The graph of the probability density function of a random variable is shown below, where -Ar) exists for all r.

Question 7 (3 marks) The graph of the probability density function of a random variable is shown below, where " -Ar) exists for all r. Explain why y " Kr) could be a probability density function and write down the piece-wise equation that describes the probability density function

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