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Anu uses public transport to go to school each morning. The time she waits each morning for the transport is normally distributed with a mean

Anu uses public transport to go to school each morning. The time she waits each morning for the transport is normally distributed with a mean of 12 minutes and a standard deviation of 4 minutes.

Given that Anu's average morning waiting time in a week is over 14 minutes, find the probability that it is less than 15 minutes.

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