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4. The length of a hockey game is normally distributed with a mean of 2.5 hours and a standard deviation of 0.25 hours. If there

4. The length of a hockey game is normally distributed with a mean of 2.5 hours and a standard deviation of 0.25 hours. If there are 80 games in a season, how many games can be expected to last longer than 2.2 h? 2

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