In March 1995 the Space Shuttle Carried an Experiment Designed $p(x)=x e^{-x}$

question 10

Short Answer

In March 1995 the space shuttle carried an experiment designed by a Harvard student who studies the growth of crystals.Suppose the probability density function of the length, x cm, of a crystal grown in space is modeled by $p(x)=x e^{-x}$ for $x \geq 0$ .The cumulative distribution function giving the probability that a crystal has length $\le$ t cm is represented by P(t).What is the mean crystal length that this model predicts? Give your answer to two decimal places.

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