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MMLU / Players in the National Football League weigh, on average, about 248 pounds with…

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question

Players in the National Football League weigh, on average, about 248 pounds with a standard deviation of about 47 pounds. If four players are to be selected at random, the expected value of the random variable W, the total combined weight of the four players, is 992 pounds. The standard deviation of Wis approximately

choices

  1. 47 pounds
  2. 67 pounds
  3. 94 pounds
  4. 141 pounds

subject

high_school_statistics

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