SOLUTION: The hardness of a piece of ceramic is proportional to the firing time. Assume that a rating system has been devised to rate the hardness of a ceramic piece and that this measure of

Question 1177878: The hardness of a piece of ceramic is proportional to the firing time. Assume that a rating system has been devised to rate the hardness of a ceramic piece and that this measure of hardness is a random variable that is distributed uniformly between 0 and 10. If a hardness in [5,9] is desirable for kitchenware, what is the probability that a piece chosen at random will be suitable for kitchen use ?
Thank you

Answer by ikleyn(52830) (Show Source): You can put this solution on YOUR website!
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This probability is equal to the ratio of the length of two segments, [0,10] and [5,9], i.e.  P =  =  = 0.4 = 40%.    ANSWER

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