The probability that 0 1 2 3 or 4 people will seek, Ask an Expert

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The probability that 0, 1, 2, 3 or 4 people will seek treatment for the flu during any given hour at any given emergency room is shown in the following distribution.

X--> 0 1 2 3 4
P(x)->.12 .25 .33 .24 .06

a) Calculate the mean of X and interpret this value in context.

b) What are the variance and standard deviation of X?

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