The element titanium has five stable occurring isotopes, differing from each other in the number of neutrons an atom contains. If \(X\) is the number of neutrons in a randomly chosen titanium atom, the probability mass function of \(X\) is given as follows:

a. Find \(\mu_{X}\).

b. Find \(\sigma_{X}\).

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X 24 p(x) 0.0825 25 0.0744 26 0.7372 27 0.0541 0.0541 28 0.0518