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The breaking point of a particular type of rope is normally distributed, with a mean of...

The breaking point of a particular type of rope is normally distributed, with a mean of 310 pounds and a standard deviation of 24 pounds. What is the probability that a piece of this rope chosen at random will have the following breaking points? (Round your answers to three decimal places.)

(a) less than 280 pounds


(b) between 300 and 330 pounds

Math   Statistics-And-Probability   
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