If $X$ Is an Exponential Random Variable with the Probability Density Function

question 85

Multiple Choice

If $X$ is an exponential random variable with the probability density function $f ( x ) = 23 e ^ { - 23 x } \text { on } [ 0 , \infty ) ,$ find $E ( X )$

• A) \(46\)
• B) \(23\)
• C) \(\frac { 1 } { 23 }\)
• D) \(\frac { 2 } { 23 }\)
• E)1

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