The probability distribution of random variable X, that represent the number of defects per 20 meters of a certain fabric in continuous rolls of uniform width, is given in the following table Table: 1 Lists the number of defects per 20 meters of a certain fabric 1 3 4 P(x) | 0.39| 0.32 C 0.05 0.01 Find the probability that (a) Find the value of C? (b) not more than 2 defects would found in per 20 meters of this fabric. (c) at least 2 defects would found in per 20 meters of this fabric.

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