A B с D Male Total Female 42 20 62 Knows Python Doesn't 45 33 78 Total 87 53 140

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answerhappygod
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A B с D Male Total Female 42 20 62 Knows Python Doesn't 45 33 78 Total 87 53 140

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Find the mean, variance and standard deviation of the discrete
random variable.
A B с D Male Total Female 42 20 62 Knows Python Doesn't 45 33 78 Total 87 53 140
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