11. A faculty member collected data on the length of faculty meetings in her de- partment over a 3-year period. The average was 110 minutes, with a standard deviation of 25 minutes. Over the next 40 meetings, how many would be ex- pected to last 1 hour or less? If faculty members start leaving when a meeting runs more than 2.5 hours, what is the probability of a walk-out at the next meeting? What meeting lengths are so extreme that they are likely to occur 5% of the time or less?

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11. A faculty member collected data on the length of faculty meetings in her de-
partment over a 3-year period. The average was 110 minutes, with a standard
deviation of 25 minutes. Over the next 40 meetings, how many would be ex-
pected to last 1 hour or less? If faculty members start leaving when a meeting
runs more than 2.5 hours, what is the probability of a walk-out at the next
meeting? What meeting lengths are so extreme that they are likely to occur 5%
of the time or less?
Transcribed Image Text:11. A faculty member collected data on the length of faculty meetings in her de- partment over a 3-year period. The average was 110 minutes, with a standard deviation of 25 minutes. Over the next 40 meetings, how many would be ex- pected to last 1 hour or less? If faculty members start leaving when a meeting runs more than 2.5 hours, what is the probability of a walk-out at the next meeting? What meeting lengths are so extreme that they are likely to occur 5% of the time or less?
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