### Standard Deviation and Mean ? - The mean time to perform a certain task in Kindergarten follows a mound shaped distribution. The mean time is 10 minutes with a standard deviation of 1 minute. The teachers want to establish a time such that approximately only 2.5% will take longer than this time. ...

The mean time to perform a certain task in Kindergarten follows a mound shaped distribution. The mean time is 10 minutes with a standard deviation of 1 minute. The teachers want to establish a time such that approximately only 2.5% will take longer than this time. A. The time is 8 minutes. B. The time is 9 min