Author Archives: Dan Ma

An easy algebra exercise

This is another algebra problem that I came across in one of my statistics blogs. Show that: The three fractions on the left hand side are from a probability distribution. Hence the sum is 1. The algebra is not bad … Continue reading

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A calculus exercise from a probability distribution

Several calculus exercises that are derived from a probability problem are presented here. Let be a constant. Evaluate . Evaluate . Evaluate . Background For anyone who is interested in the origin of these integrals, the first exercise is to … Continue reading

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An algebra exercise

As I worked on a problem involving the exponential distribution, I had to carry out an algebra derivation, which is a nice stand alone algebra problem. Here it is: The exercise is to show that the left hand side equals … Continue reading

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