In: Statistics and Probability
1. Rolex is an expensive watch is powered by a 3-V Lithium expected to last five years. Suppose the life of a battery has a standard deviation of ± 0.30 years and is normally distributed.
Tell Rolex Corporation the following:
1. the length-of-life value for which 2.5 % of the watch batteries last longer.
2. the length-of-lifetime for which 5% of the watch batteries last longer!