In a hamster breeder's experience the number X of live pups in a litter has the following probability distribution: x 3 4 5 6 7 8 9 P(x) 0.04 0.10 0.26 0.31 0.22 0.05 0.02 The mean of X is? The standard deviation of x is?

MATLAB: An Introduction with Applications
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In a hamster breeder's experience the number X of live pups in a litter has the following probability distribution:

x 3 4 5 6 7 8 9
P(x) 0.04 0.10 0.26 0.31 0.22 0.05 0.02

The mean of X is?

The standard deviation of x is?

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