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The actual weights of bag of pet food are normally distributed.The mean of the weights is 50.0 lb,with a standard deviation of 0.2 lb.

B) In a group of 250 bags,how many would you expect to weigh more than 50.4 lb?

  • Statistics -

    That would be 2 sigma or more above the mean.
    2.5% is 2 sigma or more above the mean
    2.5% is 2 sigma or more below the mean
    95% is between the 2 sigma points (49.6 to 50.4 in this case)
    It's something worth remembering

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