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You requested a trend report on The Distribution Of Number Of Hours Worked By Volunteers Last Year At A Large Hospital Is Approximately Normal With Mean 80 80 And Standard Deviation 7 7 . Volunteers In The Top 20 20 Percent Of Hours Worked Will Receive A Certificate Of Merit. If A Volunteer From Last Year Is Selected At Random, Which Of The Following Is Closest To The Probability That The Volunteer Selected Will Receive A Certificate Of Merit Given That The Number Of Hours The Volunteer Worked Is Less Than 90 90

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