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The mean number of bumped airline passengers per day s 1.35 and the standard deviation is 0.25. For a random selection of a group of 40 days, what is the probability that the mean number of bumped passengers for the 40 days will be between 1.25 and 1.50?

  • stats. -

    Z = (score-mean)/SEm

    SEm = SD/√n

    n = 40

    Use same table.

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