For the experiment of flipping a coin three times; (i) present the discrete probability distribution for the random variable number of heads as a probability table.  (ii) determine the mean for the distribution  (iii) find the variance for the distribution.

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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For the experiment of flipping a coin three times;

(i) present the discrete probability distribution for the random variable number of heads as a probability table.

 (ii) determine the mean for the distribution 

(iii) find the variance for the distribution.

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