Cell Phone LifetimesA recent study of the lifetimes of cell phones found the average is24.3 months. The standard deviation is2.6months. If a company provides its34

employees with a cell phone, find the probability that the mean lifetime of these phones will be less than23.0 months. Assume cell phone life is a normally distributed variable, the sample is taken from a large population and the correction factor can be ignored. Round the final answer to at least four decimal places and intermediatez-valuecalculations to two decimal places.