The owner of a sand-yacht can practise only at weekends and if the wind speed is less than 15 mph. If the probability density for the wind speed on given a day is p(v) = exp(-v/10)/10 What is the probability of being able to practise on any given day?

What is the approximate number of days that the sand-yacht owner can expect to practise each year?

2019-01-19T08:34:33+00:00
Maths