Mathematics, 30.07.2019 14:10 Inrimid3619

The random variable x represents the number of credit cards that adults have along with the corresponding probabilities. find the mean and standard deviation. x p(x) 0 0.07 1 0.68 2 0.21 3 0.03 4 0.01 a. mean: 1.23; standard deviation: 0.44 b. mean: 1.30; standard deviation: 0.32 c. mean: 1.30; standard deviation: 0.44 d. mean: 1.23; standard deviation: 0.66

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