Mathematics, 18.05.2021 18:40 MengXiong1

You randomly select 30 Virginia license plates. Let X denote the number of vanity plates. The probability that exactly four license plates are vanity plates is . The probability that at least nine license plates are vanity plates is . The expected value of X is , and the standard deviation of X is

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You randomly select 30 Virginia license plates. Let X denote the number of vanity plates. The probab...

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