Find the mean and standard deviation of the difference y -, Basic Statistics

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Find the mean and standard deviation of the difference y -

Question: Essay errors.

(a) Find the mean and standard deviation of the difference Y - X in the number of errors made by a randomly selected student. Interpret each value in context.

(b) From the information given, can you find the probability that a randomly selected student makes more word errors than nonword errors? If so, find this probability. If not, explain why not.

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Basic Statistics: Find the mean and standard deviation of the difference y -

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Basic Statistics: Find the mean and standard deviation of the difference y -

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