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The random variable x represents the number of credit cards that adults have along with the corresponding probabilities. x01_2_3. P(x)0.300.250.250.20 find the Mean find the

The random variable x represents the number of credit cards that adults have along with the corresponding probabilities.

x01_2_3.

P(x)0.300.250.250.20

find the Mean

find the SD

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