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March 25, 2017

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A manufacturer knows that their items have a normally distributed length, with a mean of 7.3 inches, and standard deviation of 0.6 inches.

If one item is chosen at random, what is the probability that it is less than 5.5 inches long?

  • statistics - ,

    Z = (score-mean)/SD

    Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/percentage related to the Z score.

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