ach of 13 refrigerators of a certain type has been retu to a use of an audible, hig mese refrigerators have a defective compressor and the other 5 have less serious problems. If the refi examined that have a defective compressor. (a) Calculate P(X= 5) and P(X ≤ 5). (Round your answers to four decimal places.) P(X = 5) = P(X ≤ 5) = (b) Determine the probability that X exceeds its mean value by more than 1 standard deviation. (RC TE S

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