use cosine rule
a² = b² + c² -(2*b*c*cosA)
60--------40%
15--------10%
150--------100%
The experimental probability that the high temp will be below 45 F on the 29th day is, 4.5 out of 29 days, that is because 20 of the days have had lower temperatures, so they left 9 days of and from those 9 days, they could be lower or greater that 45F (50% each side), that is:
4.5/29 = 0.155 = 15.5%
that is the exp probability
Mean
As this value is greater than 67 and the highest number in original sequence
