The times for a particular journey during rush hour in a large city have mean 24.4 minutes and standard deviation 9.9 minutes. Using the Central limit theorem: Find the probability that the mean time...

The times for a particular journey during rush hour in a large city have mean 24.4 minutes and standard deviation 9.9 minutes. Using the Central limit theorem: Find the probability that the mean time taken for a random sample of 70 of the time for this journey is more than 25 minutes.