(Answered) Question a professional proofreader has a 98 chance of

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Question: A professional proofreader has a 98% chance of detecting an error in a piece of written work (other than misspellings, double words, and similar errors that are machine detected). A work contains four errors.

a. Find the probability that the proofreader will miss at least one of them.

b. Show that two such proofreaders working independently have a 99.96% chance of detecting an error in a piece of written work.

c. Find the probability that two such proofreaders working independently will miss at least one error in a work that contains four errors.

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