A PGA (Professional Golf Association) tournament organizer is attempting to find out whether hole (pin) placement has significant impact on average number of strokes for the 13th hole on the given golf course. Historically, the pin has been placed in the front right corner of the green and historical mean number of strokes for hole has been 4.25, with standard deviation of 1.6 strokes. On a specific day throughout the most recent golf tournament, the organizer placed the hole (pin) in the back left corner of green. 49 golfers played the hole with the new placement on that day. Find out the probability of the sample average number of strokes exceeding 4.75.