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Into the Exponential Distribution
Age 16 to 18
Challenge Level 
You might wish to recall the form of the pdf for an exponential
distribution with parameter $\lambda$ is
$$
f(x) = \lambda e^{-\lambda x}
$$
Also, this is a probability density function. What does this say about the area under the graph?
$$
f(x) = \lambda e^{-\lambda x}
$$
Also, this is a probability density function. What does this say about the area under the graph?
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