What is the probability it was reviewed by a lazy rater

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Netflix has hired people to rate movies. 80% of the raters carefully rate movies and rate 60% of the movies as good and 40% as bad. The other 20% are lazy raters and rate 100% of the movies as good.

If a movie is rated Good, what is the probability it was reviewed by a lazy rater?

Reference no: EM132855978

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