The random variable x represents the number of computers that families have along with the corresponding probabilities. Find the mean and standard deviation for the random variable x. 
A) mean: 1.39; standard deviation: 0.64
B) mean: 1.18; standard deviation: 1.30
C) mean: 1.39; standard deviation: 0.80
D) mean: 1.18; standard deviation: 0.64
Correct Answer:
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