Question: 9.4. The errors in a certain length-measuring device are known to be normally dis- tributed with expected value zero and standard deviation 1 inch. What

9.4. The errors in a certain length-measuring device are known to be normally dis- tributed with expected value zero and standard deviation 1 inch. What is the prob- ability that the error in measurement will be greater than 1 inch? 2 inches? 3 inches?

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