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The times per workout an athlete uses a stair climber are normally distributed with a...

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The times per workout an athlete uses a stair climber are normally distributed with a mean of 20 minutes and a standard deviation of 5 minutes. What percentage of athletes use the stair climber for less than 18 minutes?(A) 20.33%(B) 34.46%(C) 48.41%(D) 65.54%

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Transcribed Image Text

The times per workout an athlete uses a stair climber are normally distributed with a mean of 20 minutes and a standard deviation of 5 minutes. What percentage of athletes use the stair climber for less than 18 minutes?(A) 20.33%(B) 34.46%(C) 48.41%(D) 65.54%

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