Application envelopes at random looking for ten applicants

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A university in your region estimates that verbal GRE scores of students who apply for admission to graduate school can be described by a Normal model with a mean of 550 and a standard deviation of 80. The staff in admissions open the application envelopes at random looking for 10 applicants with GRE scores over 600. How many envelopes do you think the staff will need to open?

Reference no: EM13137322

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