Problem 3. A food delivery company declares that its workers bike on average for 6.25 hours a day (that is six hours and one quarter, or six hours and fifteen minutes) with standard deviation 1.5. Assume that for each worker the distribution of the daily time spent biking is normal. A sample of n = 16 workers has been randomly selected and observed. What would be the probability of observing a sample mean above 7 hours (P(X> 7))? fully motivate your answers