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The number of spots on a fabric is .05 defects per square foot. A) Twenty square...

The number of spots on a fabric is .05 defects per square foot.
A) Twenty square foot cloth rolls are produced. What is the probability that the roll has no defects.
B) If 10 rounds of cloth are inspected, what is the probability that the number of rolls without defect is between 4 and 6 rolls inclusive.
C) What is the probability that you have to inspect 10 rolls before finding 3 rolls without defects.
Math   Statistics-And-Probability   
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